Big Block Rocker Shaft Shims

The block has been square decked, but the heads haven't been milled. I'm using a solid lifter cam, so I need to get adjustable rockers.

So I just need to mock it all up and go from there.


What are your guys opinions on roller tipped rocker arms? Are they worth the extra expense? I just found these on Mancini's site, they are cheaper than other adjustable steel rockers. Is this an instance that you get what you pay for? http://chucker54.stores.yahoo.net/prmstshroarm1.html