HI

I have 98 c1500 with 5.0 engine and auto Transmission.

looking for a swap to ls1 or lq9 + T56 comb.

is there a differance in the Vortec 5.0 and 5.7 externally?

what i want to know do i need to do modefications on the driveshaft?

or has the T56 the same lenght with my Transmission ?

what do i need more?