[ERA2188]

427. Call AFR and ask about the exhaust ports if you are talking 205's. I know the 165's and the 185's are identical to the stock Small Block Ford heads. They bolt right on and you can (should be able to) use the same headers etc. The only reason I bought Trick Flows is that someone from Unique mistakenly told me the AFR's would require a header change. I too was on a budget, so for that reason I went the Trick Flow route. They were wrong, as the AFR 165 and 185 have the same dimensions and same port locations as the stock heads. The AFR is a higher quality head IMO, and they have smaller valves, with similar or better flow characteristic, that means higher velocity which = more power (so I am told). Keith Craft uses AFR's on a lot of SBF motors. I don't know which cam you have, but you might look at it. Although one Fast Ford article I read stated "formula for a touque montser = conservative cam + high flowing heads. For street use I BELIEVE your biggest problem is that you are starving that 351 inch motor with those puny GT40 heads. You can always change the cam later. Ask for Tony at Kenth Craft, or Keith (he is a cobrafile - has a Kirkham).Rickd