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mustangII460 · 07-28-2000, 02:58 PM

428cj heads have 4 bolt holes to each exhaust port. one on top/bottom & both sides of the port.

The only other FE head like this is the 390 GT head wich I doubt somone swapped in. 390 GT head is still a great head though.

Might help.

07-28-2000, 02:58 PM	#5
mustangII460 Factoy Five Roadster Join Date: May 2000 Location: Sevier Co,Tennessee Posts: 1,681	428cj heads have 4 bolt holes to each exhaust port. one on top/bottom & both sides of the port. The only other FE head like this is the 390 GT head wich I doubt somone swapped in. 390 GT head is still a great head though. Might help.