The car is a 96 ws6. I've been talking about building the motor since I bought it two years ago. With 135 or so thousand miles on the car I'm thinking of just building a whole new motor for it. So naturally I want a four bolt main. There is a block out of a 93(i think) corvette on Craigslist with steel main caps. i wanted to go with billet main caps but if the steel is enough id love to save some more machine shop money. The guy says its an lt4 but I know those didn't come around until 96. I've read that all lt1s from vettes had four bolt mains. Is this true? It's already been bored 30 over so it'd be perfect cause I'm going for a blown 383. There is also a procharger p600b supercharger on Craigslist. Is this a good blower? For a blown 383 would I want a bigger or smaller combustion chamber? And does the rod length affect the deck clearence? If so what would be the clearance assuming the deck hasn't been milled with 6in rods on the above mentioned block? I will adjust the dish size of the pistons accordinly to get a 9ish:1 CR. my goal is 10-15lbs of boost with water meth to run on pump gas if necessary. I've got the top end figured out other than chamber size. I know I want a cam with 114lsa or more. It's just rod length deck clearence and compression ratio that I'm a little lost on. I'm sure I'm forgetting something in my plans but that's basically all of my concerns. Any and all advice is greatly appreciated. Thanks!