wont be just a swap you will need to cut the frame from what i here. Springs new rear end and drive shaft and axles. I would think keeping it cool will be hard as well. Check what mallut is doing seems quite alot of work. I wonder if even malluts can handle AZ summer in trafic with the ac on? It gets a 120 here in the summer were im at and i know my Z has trouble when i put the ac on, and it has a giant Be-Cool al radiator with aux fans.
I would use an all aluminum block to keep the weight down. For the money you could build a 400hp 4l and keep the car almost stock. I was watching a old Bonavill salts flats speed tv and they had an ecotech with 800hp going well over 200mph in a saturn a world record at the time. so these motor cab pump out alot of hp.
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2008 GXP
Auto, Air, Mud Gaurds
1971 z28
open chambered large D port .30 over BB
Six speed ROD
cold air hood
Eaton posi 12 bolt
44gallon Fuel Tank