Serious 340 build into 361 HiRPM Screamer

Which shaft mounted ductile iron rockers fit the magnum heads?
I never seen mechanical rockers but rollers.
*I Think* I seen them in, ether/or/both/all of them from Jesel, TD & Crower. It was a high end rocker.

Again! *I Think*!

Are they available in the desired 1.7 and 1.8 ratios too?
Not in ductile mechanical, but,
Again I start with *I Think* I seen 1.7. IIRC, *I Think* I seen companies like Comp (but don’t quite me as fact) having a 1.7 rocker. I don’t remember seeing a 1.8 being produced, but if it is possible, it’s only (lots-O-) money the customer has to cough up.

(Sometimes you see so much on the net advertised and what’s new in days, it gets confusing.