My home inspection of Speedmaster heads

*Update*
SM heads installed and runs great. Easier to turn the manual steering with the 52 lbs loss, ran the same around town, definitely faster out of town. No other changes to the car besides the heads. Car still has 2.94 gears, stock converter, and a small cam (.427 lift/ 204 @ 050 on intake side). Used factory stock rockers/pushrods. :)