Hughes Girdle ! Opinions Appreciated

Pondering the idea of using the Hughes girdle for my 340 build but would enjoy forums comments etc .
Building a pretty healthy 340
11.5 compression
Factory steel crank
Scat H beam rods
JE pistons
Big solid flat tappet
Tunnel Ram with two 450 units
New Alum Rpm heads ported and professional valve job performed .
Ok what would be the max power hp one would put on stock main caps and stock main cap bolts ???