319 threw a 6 speed is about right for stock heads and the hot cam. so if there ported they didnt gain anything. ive seen cam only auto put down close to that. So id say LE1's or better in the budget? and as far as a real LT1 balanced crank it will have to be balanced buy a local machine shop. almost no aftermarket kit is balanced like the LT1. wich is internal balance in front(no weight like a 400) and external in the rear. it will either be a custom balanced assembly or get the clutch you want and just have it zero balanced as an assembly like i did.
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1998 Firebird:buncha parts thats used to make it go fast..... not so much anymore. 
BAAAAAA!!!!!!
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