The "308"s are supposed to be the best of the factory LA heads, but like magnum heads, there are often cracked. That engine will respond well to the typical hop ups, carb, intake, ect. If it's a roller block, a small hyd roller cam upgrade is easy also.
Nice!, thanks for the tips. Yes I intend a small cam just to get the power up but nothing over 5300 I suppose. What valvesprings are the economic go’s, lol