Originally Posted by Dougs951S

LS9 crate engines are rated 638 hp/604 ft lbs at the flywheel with factory headers/intake and stock tune/pump gas. The kit which is essentially the complete motor with oil pan (minus the oil lines and oil tank needed since the LS9 is dry sump) and flywheel + ECU + harness is ~22k which honestly is not that bad when you realize that the thing is a turn key 600+ hp engine with baby smooth idle and a factory warranty and lots of headroom left...Someone with a lot of time could easily stuff that into a 944 and be done for under 30k if they did it all them selves. That'd be a real super car, forget your Ferrari.

Originally Posted by odonnell

Cheaper than an LS swap. I built a 951 engine out of an early NA engine for way less than $5k. $350 for the engine, $80 to have all the parts cleaned, $120 for 951 pistons, $500 for oil pan, headers, manifold, throttle body, bellhousing, flywheel, clutch fork, water neck, and turbo mount (package deal). I paused the build because I got a 951 with the rest of the parts I would need, but otherwise I would still have needed a turbo itself (I have an HX35 but that's not really a bolt on) as well as a clutch assembly. Under $2k. Then you have to consider a ~$1000 rebuild kit, luckily the LR ones have basically everything you need, down to the Loctite 574. Also get a real transaxle, expect $500-800 for an open diff box.

You also need to think about how you're going to run it, spending the $ on 951 stuff (injectors/DME/KLR/AFM/harness/etc) is a huge waste of time, for ~$1000 you can get a standalone ECU like Megasquirt or VEMS. All in, still under a grand if you're smart about it.

I mentioned I bought a 951 with all the parts, right after I mentioned I bought all the parts. So I have doubles...I could cut you a hell of a deal if you're interested, guaranteed to be the cheapest 951 swap possible.