Saw him today and asked. He does various versions of the engines from almost stock to 500+HP with fully forged internals.
Standard(ish) engine with original crank and rods, balanced and with lightweight flywheel and their custom ITBs fitted should make 400hp. Said it should rev to at least 8000, probably be OK at 8500. Would cost 10-12k on top of buying the second hand engine to start with as the base for the rebuild.
It's a very compact engine. Much smaller than the Alfa or Toyota lumps. It's only a little bit wider than a Honda K20 4 cyl engine (which is the guys other specialty).
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