Cylinder head center bolt access tricks wanted

RustyRatRod said
Might be costly, I've never checked into it, but female hex head fastners would solve that problem.

Like Allen bolts or socket head cap screws? I'm sure they are made in the correct grade, sizes & lengths. You'd have to piece together what you need. Here is a metric set made by ARP for a VW 1.8 L engine.