195cfm/140cfm is the flow numbers for the GT-40P heads I believe so these are comparable. And since these ported heads come fully assembled it's a simple swap.
But:
I was just looking on Jeg's site and they have them listed for $ 269.99.
397-M-6049-P303 GT-40 "P" Cylinder Head Assembly $269.99
WOW. Something's not right here. I just checked with Holcomb and they have them for $449 bare, or $689 assembled. Jump on the misprint people! GT-40 P heads for wholesale prices LOL.
HiFlow5 0, it looks like gears and a set of heads should be very near the top of your "to do" list
[This message has been edited by 2FastLX (edited 10-11-2001).]