Low 12's?

[fiveohpatrol]

are you planning on using slicks? If so, that combo with the ported stock heads is capable of running high 12's @about 105mph or so.

The AFR165's and the TFS's are both great heads and will make around 300rwhp with the combo you've listed. They'll both get you to the low 12's you're looking for, and I've even seen some 165/cobra/e-cam combos hit some 11.90's.

You might not be able to run the 1.7's with the aftermarket heads if you have stock pistons though, especially with the TFS's because of their "twisted" valve position.