Really wouldn't be that hard Peter, LHS turbo manifold with a cross over pipe, that's how my mate Dave from ASE Turbo kits, intercoolers and performance products. makes the LS1 turbo kits and they're making huge power. Plus I wouldn't go too bit with the exhaust housing. If anything though I do know where there's a few TDO4s off WRXs lying around, so that could be an option for twins.
Stuee, funny you mentioned that, but after I finish my ute I'm keeping away from BAs engines for a while, this one is gonna be several house deposits worth (yet the goal is for 800-1000rwhp). One option I would go for though is an LS1. Has been done in a Disco in SA. Very versatile engine, still alloy and can produce 500hp (if you wanted it) properly with cam and heads.
