Mine is being built by Mark Shead seen similar spec engines making high 600’s, sure Dave Pritchard is running 755hp on similar spec engine, I’m starting off with less hp maybe around 450/500 but safe in the knowledge I can easily make more if I wanted

200 block
ductile liners
CP short pistons
Carillo long rods +8mm
standard grind crank
cnc ported head and trumpets
marks own long studs
wrc head gasket and cometic gaskets
big wing sump
custom cams
piper double springs
arp main studs

and modern ecu ect, obviously loads of different ways to skin a cat. I’ve read if guys running standard rods at 600 but I’m too parra for that