Best 273 and 318 builds (NO 360's please)

I noticed in Scamp408's roller rocker thread you said you don't have clearance for 1.6 rockers, BUT, your pistons are far down in the hole. You more than likely have clearance that you do not realize. The valve reliefs are designed to accept larger lifts.
The Zero deck slugs from KB can handle .550 and better.

Knowing how far down in thehole the slugs are along with valve cc relief depth/amounts would be wise. You could be leaving a good deal on the table or left behind in the for sale ad.