Not Ranked
The differences are much less with the 289's. When my SPF289 FIA was being assembled they sent a photo of the frame and suspension from the factory and in front of the frame was a placard that said CSX on it. The 427's are different, but Had my 289 FIA at the last SAAC and several people who owned original 289's commented on how close to the original the car was. Mind you, I had added Girling brakes and the Salibury differential along with a vintage 289 and Webers.
Jim
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