[Mike Taylor 3601]

We typically run 140 seat 400/425 open on street N/A hyd roller and you need to raise that,coming up with spring probably won't be big deal,the problem is when you start going over that whether the lifters will handle it. When start going over 140/400-425 a lot of lifters will start compressing,there are lifters that will take more pressure,but don't think stock ones will take it.

You'll probably need 180 ish seat 450-475 open.
Don't know all info that need to know,these are just ballpark recommendations

Mike Taylor 3601