Thanks for all the info everyone. I'll start making calls tomorrow. I still have the stock camshaft however I want to run a mechanical pump. Not sure if this can be done with the short snout cam.
Here's a link to the fix @rumblefish360 is referring to. I bought one of these to use in my 273, because the only blanks that Bullet had to grind my hydraulic roller on was a short snout Magnum blank. It was about 6 weeks from order to delivery from Bullet. Hughes Engines