Fuellies are fine for what your saying you want. I have an old ported set that will support over 500hp. Unfortunately, they have cracked between front & 2nd exhaust port, on the outside of the haed. But they're on my skiboat now and only drip during normal running up to about 3000rpm. So unless the dam runs out of water, it's not a real problem.
If the fuellies you have are 57cc, the cr with a flat top is going to be about 12-1. I would cc the chambers to check what you have. With a dished piston 57cc would be streetable on pump fuel. A 64cc fuellie with flat top will be aprox 11-1
I saw these on Ebay last night. AFD do a lot of Ford heads, and seem to have a good reputation for good heads. As the ad says, they're a new line and not yet released. Could be worth a look.
http://www.ebay.com.au/itm/AFD-SBC-3...item257c9d0ace






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