[ERA Chas]

BLYK,
My standard bore [and stroke] SO short block [a 68] contains 39 year old forged crank, LeMans rods and 41 year old, first design pistons [with "knorbs" on 'em] and turns 7000 all day.
Last year, I installed Shelby stage II heads. Have bagged and saved the iron med risers which have 2.25"/1.75" Manley Severe Duty valves and mild bowl and short side porting. Probably only need stem seals replaced.
Good machine work is slightly more important than component selection IMHO.