[MKS427]

Upgraded to hydraulic clutch. The cable wasn't working well with a heavy clutch.
Upgraded cooling system due to rapid overheating at idle only. Items to address, plumbing including adding expansion tank (header tank not recommended), prpoer fan shroud, and electric fan must pull good cfm at 0.7" (published numbers are at 0").
Added efi due to big cam.
Change tires from 300 to 100 traction compound. Hugh difference. Trade off, you will not have suitable tires for rain.
Headers that came with FFR were not for raised port heads. Gordon Levy and GP Headers make headers and or pipes that fit FFR.

Definetly install heat mat.