Hey Greg!All the 1968 and earlier HP motors I have seen (maybe a couple dozen)were ALL "HP"
All the Big rod motors were 69 casting and later and stamped "HP2"(including 2 genuine 3 bolt cam six pack motors)
FWIW. My two cents...


I'm 55 now, no time to waste. Not a week goes by that I don't hear about someone passing on.Let's get out there,smoke some tires,have a beer with a good friend,do what you have always wanted to do.I am pretty sure no one will ever say on their deathbed "gee I'm glad my life was calm and boring"