Westcoast, Mopar sold the 380HP/360 LA short blocks with the FT .508 cam and regular hydraulic lifters in a roller block, that is what I have been running up to now. Since you have shaft rockers, you are good to go.
Toolman, I got my spider, dog bone lifter holders and lifters from Bouchealon, ( probably misspelled ) he was very helpful. I made the swap to hydraulic roller.
