[sweetk30]

i have never seen a change my self in 81-87 stuff .

i know some 73-80 if using aftermarket bushings need the rear tube cut down in length for there bushing is all .

i have 3 trucks now with 81-up frames and bodys on them no problems.

now there is 1 piece floor pans with 2wd low hump unless 4 speed then high hump same as 4wd high hump .

i currently have a th400/203/205 combo under a 2wd low hump cab floor in a k30 frame and it JUST clears . even if it didnt it only needs a hammer dent under the seat were you will never see it . now a stock 4wd shifter in the floor would be wierd i think . but i dont know as i have a aftermarket 3 stick shifter so its custom anyways .