help baby lt1
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The Best V8 Stories One Small Block at Time
My point is mods will not matter if the car is not 100%. But to answer your question of what mods will make your L99 (?) an enjoyable street performance engine- the usual bolt-ons like high flow exhaust, cold air intake, definitely a tune. It should be enough left over for those after maintenance if what you got is in a decent shape.
Don't forget the suspension though... The most important thing is to be safe on the road, both for you and others. 

