[supergonzo]

You can run stock rockers 1.50 ratio if you want but why??
If you are getting an expensive HR cam why would you put stock rockers on it. You could get roller tip 1.65 ratio rockers, but if you gonna do it, do it right.Get Roller Rockers. They will fit under the stock valve covers, if you use 2 valve cover gaskets. Look Stock....Go Fast

Steved...I think you meant stock rockers, not lifters with the HR cam