I am not really used to dealing with the tbi setup everything we get into end up with a carb on itl. We run a set of vortec heads on a car we have I can tell you alot about them if you are interested. In my opinion top of the food chain for bolt on performance heads are the AFR heads I just seen their cnc ported new head it is just beautiful but it isnt cheap. Dart iron eagle platinum are a nice lower cost head.
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