'78 big block cruise in my '80 small block?

[Boostaddict]

I'm thinking of adding cruise to my '80 400/th350c truck. Looking for a donor truck for parts and found a '78 454/400 truck. Other than needing to find a servo bracket for a small block or modding it to work (and probably a 1484 cruise control kit since I have an edelbrock) is there any reason this wouldn't work? Any differences in speedo cable, wiring, etc? I read that newer cruise setups have wiring to disable the torque converter lockup, and this setup would be missing that I assume… but I'd guess that shouldn't be a problem since the th350c TC should unlock automatically? Thanks!

Wayne