I am in the process of building a 347 stroker for my mustang and I am stuck on which heads to get. I am thinking about ordering the trick flow heads but i hear they suck cuz the threads are drilled directly into the heads and there are not metal inserts. I am wondering if there are any heads that are comparable to the performance and price of the trick flow twisted wedge 66 ccs. Plz respond soon bec i need to order asap. thank you guys