68 Cuda 383 vs a 360

I have 2 engines choices
383 and 360
How difficult is it to fit a 383 into a 68 notchback Cuda ?. I know I need BB motor mounts and all of that . I want Headers, very important
I am building a mild driver . Would I be better off installing the 360 SB
I dont want AC but power steering, yes
Having put a big block engine into my '68 Valiant and a 360 magnum (408) stroker into my '70 Duster; I will tell you that the stroker wins every time. Easy installation, good clearance all around, and plenty of street performance.