Slant six performance parts

The offy intake still uses the heat riser for good cold weather warm up, Headers are pretty much the same, cams can be had From Comp, Isky, Oregon camshaft (regrinds, cheap!) 500 CFM or 390 4bbl is good size, may try the 400 CFM Holley 4 economizer carb, cheap on Ebay. Mods include Milling head .090, replacing head pipe with a 2.5 inch piece along with the rest of the exhaust, going to a 2bbl intake with carb and kickdown, changing rear off the 2.76 to maybe a 3.31.