On your deal not knowing which head and head gaskets your using as well as is it a stock uncut deck block or is it a aftermarket block deck to blueprint specs for a Hi Po build limits what can be said on the specific length needed to get them perfect
As for all this, while it would be nice to know, it really doesn't matter from where we sit. The engine is in front of the OP. All we can do is advise him on the process.
And FWIW, I think adjustable rockers are totally wasted on any hydraulic cam - regardless of the application.
