I have an 89 IROC Z with 5.7, auto. Only 89K on car, but older lady overheated moror, blew gaskets and engine filled with water over 7 years ago. Engine is rusted bad, good paper weight. I would like to up the HP to 350 range, any recommendations. I am looking for a stock or modified engine near San Diego, CA for a good price. I will be registering the Z in AZ with no smog requirements! Anyone out there that can help I would greatly appreciate it.