SKATULAKI YOU MIGHTgo to 4btswaps.com.
I'm a member over there also . It used to be a really good sight but is sold out. & It's not anywhere as good as it used to be. But I did put a 4BT Cummins 4cyl into my 1972 Bronco about 10 years ago .. It was the best swap ever for about 10 years but someone put sand in my fuel tank .. I've been a year trying to get it running again .
.........I'd worked for Dodge Chrysler for 8 years & I'd gathered up all the stuff to do the NV4500 SWAP into my bronco but it was running with the NP435 Granny 4speed & I've gotten old & for some reason if I get onto the floor I can't get up off the floor for 5 minutes . SO I've just about gave up on doing more swaps . SO I SOLD my plate & 3 NV4500.trans . U-Joints yokes ..clutch & all that stuff . I had it all . but I decided I didn't need to run faster than 50+ in my Bronco so Overdrive was the last thing I needed.
..... for you in an 02 I don't remember how to answer you question about the computer .. But going to a manual I'M thinking your much better off than if you were wanting to go to a automatic .