You'll want the 72 cc heads if this has to run on pump gas. Would be around 10.7-1 compression
What are your cam plans?? Intake and carb??
4.56 gear isn't much gear with those big 40" tires...or are you running in 4-low lock on the T-case??? If you are trying to do this in 4-High on the T-case you'll need something like 5.38 or more gear.
Last edited by ericnova72; 03-21-2014 at 07:06 PM.