Typical Ebay find, I scored an Isky 505T street/strip roller cam supposedly new. When it arrived, the first thing I noticed was it was a regrind on a CAST core (flat tappet), which didn't scare me because this thing will run with 150# seat pressure and maybe 400# nose pressure. The second thing I noticed was the timing drive is 1-Bolt, instead of 3-Bolt. I can use a regular non-bronze distributor gear which is nice, but there is no way to run a thrust button/roller. I figure the only way to control the thrust is to use an aluminum timing cover and put the thrust device in that, with a machined-flat cam bolt. Any suggestions? I have basically nothing in it, probably because the guy who had it couldn't deal with the thrust issue. I checked the specs in a block with a degree wheel and it is the 505T roller grind, stamped right on the end. Weird!