I agree w/ what Ikeybmg just said.... You'd be okay w/ a 65mm, but a 70 shouldn't hurt you w/ a h/c/i swap. Definitely get 24#ers and a MAF calibrated for them 75mm-80. I like PMAS/Pro-m, but a lot of people on here run C&L, too.

 

if you get the c/l maf get the 19# and if you need 24's the tube is like 20.00 I have about 15-20 of different tubes if you need one

 

You absolutely sure a 70mm TB wont be overkill? Will the pump and 25#ers drop my mileage drastically along with new 3.73's?


Oh yea...it wouldnt hurt to put on that pholieniotolistnc (heat spacer) for my manifold would it? The 1" spacer that is. It wouldnt raise the intake too much for it to clear my hood?

 

You'll be okay w/ the 70. Why don't you just buy a used 65 and see how you like it? If you want more, then you can sell it and probably get your $$ back. I'll be running a 65 on mine, but I just figured I'd upgrade later if I felt the need.

The 24's and 3.73's might change your mileage a little, but it also may not. If you stay w/ your 19's, you'll be coming closer to the max 80% duty cycle. By going w/ 24's, you are giving yourself room to expand as well as putting less stress on your inj's.

If it helps any, 24's and a MAF to match will be my next upgrade...I'm just trying to get my stang running. I've got 19's and a PMAS 75mm MAF going in it this week.