Straight up use the F-54 with the N-47 head and you will have a high compression motor that can handle a good amount of power. Just use high octane gas 93 or better will be good. If you use a 1mm metal head gasket you will have 10.19 to 1 ratio. If you use this setup you will not be disapointed trust me.
John Snead
John Snead
