I'd go with the fel pro, I think they compress to .040. I ran them on my 390
back in the day whern they first started putting the o,ring of a sort in them.
In the mid 70's my 390 ran 12:71 @ 105 in a 4000 lbs 57 Ranchero. Not once,
everytime you raced it. Hell of a bracket car at that time. A .060 over 62
block w 6090C heads, Lowriser rods, 2X4 lowrise intake/w 2 500 cfm carter
comp series carbs, Malory points type Distr, and good headers. A FOMOCO
500-324 cam. 10 in converter. Really basic stuff
good luck, Ron BTW, a 10X28 Tire