The ZF6 from the later C4's for one is a bolt in swap
T56 also but requires a custom adapter for the C Beam
All swaps are going to require mods to the trans tunnel for the shifter if swapping from a auto ( you don't say )
The ZF6 from the later C4's for one is a bolt in swapi just wanted to know if there were any 6 speeds i could hook up to a 1985 L98 without any major modifications. .