been getting quotes from different trades for headwork so far td has offered the cheapest/most work but the only thing that puts me off is they wont actauly give full details on the head spec they would rather keep it secret other than mentioning it is pressure tested, skimmed, ported, polished, custom camshafts and custom valve springs. whos ran one of these? do you happen to have any before and after dyno sheets? what sorta power are u running and on what kinda engine/turbo set up?. am all for secrets and td protecting what they feel is the best spec head but when your paying out a fairly large sum of money i dont no if i like the idea of basicly being told what i paid for is a secret that i cant no