why not wait and buy a 70mm TB with a manifold that has a 70mm opening? just my opinion though...i dont see any use for more air into stock restrictive heads and intake...woops never mind, you have ported heads and lower
i just ordered a 73 mm c+l before i posted this topic. i decided to go with the 70mm because i plan on adding a trickflow street heat in a couple months. thx for the advice guys