Building long arms

[TwistinGearz]

So i have a project goin.. I had a 95 12v that i rolled and now im putting the motor in a 98 that had a 12v in it. The 98(Project "Hellvalve") has an 8" lift on it. The lower long arms are bent though... So what im trying to do is cut them at the bend and sleeve them with another piece of tubing and weld it all up. Ive done some research on materials and stuff to use but i need to know the length of the arms from eyelet to eyelet to make sure everythings as it should be. Perfectly right is always the goal but does everything have to be exact from side to side and ratio from upper to lower? Will one being 1/4" longer or shorter change anything or if both are a little longer or shorter then they should?

So what i need is..
*length of lower arms from eyelet to eyelet for 8" lift for 98 2500 cc lb.
*any tips, advise, ideas, or where to go for info.

Any and all help is appreciated thanks