How to increase tail pipe size??

I own a 2012 Dodge Ram 1500 Crew Cab Sport with dual stock tips. Can anyone tell me how to increase my stock 2.25" tail pipe to a 4" tail pipe? I'm still running the stock cat back from Dodge. I bought gnarly 5" rear tips that require a 4" inlet pipe. I would prefer keeping my resonators in place but not sure on that one (trying to defeat the drone thing) but it limits how much room I can play with, so I'm on the fence with keeping the resonators. My new black 5" tips are 12" long!! So I have to figure out a way to fit a 4" pipe to the 2.25" stock pipe. Need some sort of (short joiner) to connect both size pipes. The muffler shops say they need lots of room to fit increaser(s) ie 2.25" to 3" diameter then another increaser from 3" to 3.5" and so on. So thinking outside the box here perhaps I should visit a machine shop to build me a (joiner) from 2.25" to 4" ??? Sorry for the long post folks. What have other people been doing?

Thanks for any comments/suggestions

This should help
http://www.ramforum.com/f41/mbrp-5-tips-installed-18979/

Wow !!!! I just ordered!!! I've been lookin all over the place Thanks a bunch

See Bob......RF kicks ass.

I just had 5" Black tips installed yesterday on my 2011 Crew Cab. I picked up 2 4"OD-3"(doesn't really matter because shop will flare the 2.5" pipe to fit the 3") reducers from Napa. Had my resonators removed as well. I am running a 40series Flowmaster and I can tell you that having the resonators removed changed the sound. It is louder and rumbles more. Prior to having them removed I was getting a slight drone from 1st to 2nd gear for a few seconds but thats it. Now the drone is gone but the rumble is louder in the cab. You will have to cut the corner off of bumper mounting plate depending on how tucked up you want the tips. The tips look bad ass.

king99 said:

I just had 5" Black tips installed yesterday on my 2011 Crew Cab. I picked up 2 4"OD-3"(doesn't really matter because shop will flare the 2.5" pipe to fit the 3") reducers from Napa. Had my resonators removed as well. I am running a 40series Flowmaster and I can tell you that having the resonators removed changed the sound. It is louder and rumbles more. Prior to having them removed I was getting a slight drone from 1st to 2nd gear for a few seconds but thats it. Now the drone is gone but the rumble is louder in the cab. You will have to cut the corner off of bumper mounting plate depending on how tucked up you want the tips. The tips look bad ass.

Click to expand...

^^^^PICS? Since JJ posted his pics Ive been lookin at this too, but the ones i want (RBP) are around $120 a tip. Then add adapters and the shop. Cant make myself spend $400 on gettin tips put on. Which black tips did you go with?

Thank-you very much, went to RBP's web site and ordered a set!!! You saved me a bunch of time!!!

No problem at all. Thats what the site is for. Helping other guys spend money so you dont feel so guilty about doing it yourself. Not sure how much you ended up paying for the adapters, but in the previous link i posted they talked about (Ramhunter9) of Db customs having some really good prices on them.

Should have came to me ... if you bought direct from them you paid to much .. LOL

Live and learn .

Welcome to RF

[email protected] said:

^^^^PICS? Since JJ posted his pics Ive been lookin at this too, but the ones i want (RBP) are around $120 a tip. Then add adapters and the shop. Cant make myself spend $400 on gettin tips put on. Which black tips did you go with?

Click to expand...

MRBP tips, bout $70 a piece, adapters were $34 install was $120

ramhunter9 said:

Should have came to me ... if you bought direct from them you paid to much .. LOL

Live and learn .

Welcome to RF

Click to expand...

Do you carry the RBP tips? Im really liking the 18" black with chrome logo