Not interested. I don't want or need that much power. I want as close to around ~300hp/300lb-ft as I can get, from around 1000 rpm up to around 4000rpm...maybe 4500.. but my wagon never explores 4500...it rarely, if ever, even sees 4000. It sees Idle-->3500 *all the time* and that is where I want max torque. Mainly just to accelerate away from stopsigns and onramps.. in Low-Range the current torque is just not an issue. I would be very happy with 275hp and around 275-300lb-ft.
I have built many crossbreeds over the years, and while they can really solve power challenges, I simply do not want to drop back and punt to a frigging small block chevy. It's a great engine, but I don't care. I am bizarrely fond of the little aluminum v8. The challenge of making "modern feeling" power is just that: a challenge. It's fun.. and it is actually cheaper (for the power levels I am looking to obtain). Engine swaps are never "just" engine swaps. Beyond all the conversion hardware and electronics, beyond the cutting and welding and all other stuff... there are the upgrades.. to cooling, axles, springs, mounts, etc, etc... all this crap adds up and is **certainly** not cheaper than bolting an M90 on, upgrading the injectors, and and adding a chip. Sure.. a new radiator and other upgrades will probably find their way into the project but I
guarantee, based on my own personal (admittedly anecdotal) experience,
"dropping" an LS under the hood will *not* be cheaper nor easier than bolting some positive displacement onto the existing powertrain. It will also cost a lot more in time.
The main issue I am now looking at is snout configuration, M90 or M112 or M122, whether I can press the lower plenum into use with minimal machining, and how high the whole shebang will be.
M90's are dirt cheap.. the Jag supercharger +intercoolers looks really interesting (and low profile) if it can be made to fit. *I still have the electric "boost box" project on the drawing board (it is mainly for an RX-8) but the m90/112/122 looks really compelling without reinventing the wheel.
*I know nitrous would be the easiest and cheapest.. again, not interested.