I really need some advice here

rumblefish360 said

The cars *** coming out from under you and getting in front of you is a suspension traction issue. Not a HP/torque issue.

My advice is build the 1991 "LA" roller block and upgrade the heads later. Ported 308's are fine. And since your doing that work, cheap! Building a Magnum engine limits your heads to Magnum only heads. The problem is the lack of a block oil passage for the more common "LA" head.

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This!!¡!!!!!!!!!! Absolutely, the best common sense thread,I've seen in along time. Chassis & drive train ,first. This gives you, a stable tuning point. I agree with the 360,no stroker crank needed. GOOD MACHINE WORK(read actually accurate...) ,a matched cam/compression/airflow/gear combo, it's a relevant deal.
In re edit : The whole thread,has so much to offer,I picked his.(I like picking on him,lol) Chassis & suspension, first. That's where the basis starts.