Oh I have as well. Does that mean they can’t be improved to adapt and have a better geometry to fit those heads and others. Heck I don’t know for sure but I’d be willing to send the Harlands and one of my cranes off to somebody here to take measurements. My tooling only goes so far. Don’t think my hammer, vise grip’s and duck tape will cut it. Lol! Just put it this way after talking to HS I was convinced and at my door in 3 days.

H S must of come a long way in product design, Ive never owned any but back in the day the quality was questionable imo

My Crowers intake rockers are offset , was able to get a much better pattern on teh valve vs. standard

Seems like Tony Mamo was involved with private label updated rockers but I’m not 100% on that however was told from HS. I’m not digging but rather curious since on the subject - have you personally used them? I’ll comment on their uphold as it benefits everyone.

as I stated above Ive not used then before

What heads are you running , so their marked intake , or you can tell by looking at them

The promaxx that Valako recommended for the price and quality. From what I understand they are a splash of the 315 afr’s. I visited him last week and witnessed the numbers so I’m happy with the numbers but time will tell. The rockers I bought are labeled intake and exhaust. I can take pics tomorrow.