I could be wrong, but I think the spec is roughly ST200 engine, with the head ported and gas flowed, three angle valve seats, stainless headers, sports cat and the existing MIJ exhaust system
It's the ST200 engine fully rebuilt new mains, big ends, piston rings,bores re-honed. Ported and polished gas flowed heads,Iridium plugs 10mm leads S/S headers and sportcat. This will respond well to the tuning due to the higher engine compression of the original engine.
I only know what half of that actually means, but it sounds like proper, manly, I-don't-trust-anyone-without-oil-under-their-fingernails engineering!