Novak adapters has an engine mount kit that I used.
I had an over heating problem at first. I was using a cheap radiator and an electric fan. After I blew the whole plastic top off the cheap radiator and stranded myself in the mountains I once again called Novak. They were able to send get me all the stuff I needed to fix that problem up in the mountains. They sent me new hoses, clamps, and an all aluminum radiator. That wasn't cheap but well worth it. After I installed the new radiator my alternator fan rubbed a hole in the top radiator hose. So that's something to watch out for. I built a little sheet metal shroud to put over the alternator to avoid that problem again. Once I got it home I was still running hot. I pulled the electric fan off and put the mechanical flex fan back on. Then I changed the thermostat out from a 195* to a 180*. Cooling Issues solved!
Wireing was a pain from the beginning even using the factory gm wiring harness and fuse panel that came with the engine. The hardest part was getting gages, lights, ignition switch tied into that harness. It would have been next to impossible for me at least if I didn't have that harness so make sure tou get it intact with whatever engine you get. There were I'm sure some other small problem that I'm forgetting but those were my main headaches.