edelbrock heads, icon 836 pistons, 440 source rods, engle k65 camshaft, ch28 with two 600's, tti exhaust. very reliable; did a 200 mile road trip a couple of weeks ago. got about 14.5mpg with a 3.23 gear and 28" tall tires. burns very clean; simply don't work on it,....hope I don't jinx myself (lol).