Caps94ZODG

I need an engine for my 94 Z and I would just like to be able to pull the old one out and the other one in. so was wondering what could be considered "complete" LT1 and how much would it cost around something with not to many miles on it 75K or so.

also the compatability of the engines, they all the same? or what? also what if it was a vette LT1 would that work??

never had to do a LT1 engine swap so just confused.