After I money shifted my engine, I found one right here on MaxBimmer, from bimmerm5. That S52 turned out to be in great shape, no noise, no knock, no ping, nothing.
Some of you recommended RMP Motors, and boy were you right.
Had my car shipped there by some cheapo company (that took a while - long story), but between the moment I decided RMP would do the swap and the moment I got my car back, Rocco at RMP has been awesome to deal with.
Great prices, every e-mail answered promptly, every phone call taken, etc...
I had bought a used clutch I bought for 150$ turned out to be faulty ; I struck a deal with the seller, so it's fine. I bought a new OEM one. The shop cut me a great deal on it.
They did, however, have to charge me some labor for the time spent toying around with the new + old clutches and pressure plates.
As for my «old» S52, Rocco actually found mangled pieces of the head in the intake manifold and in the headers. The block is pierced, too.
Here's the lowdown of what was done, since the engine was easier to work on anyway :
S52 swapped in (w/ a fresh coat of black paint on it!)
New rear main seal
New clutch + pressure plate + bearings
New shifter bushings
New oil pan gasket
New fuel filter
Fan delete mod (thermostat + fan switch, the whole nine yards)
Metal impeller waterpump
UUC Red TMEs
Tack welded oil pump nut
Fresh Royal Purple oil in the tranny
The car feels completely different.
The new clutch engages so low, it's freaky. The new shifter bushings also totally change the shifter feel. Mine was looser than a hooker's vagina.
The sound is also lower due to the headers now being installed.
I also took my old cams back, and will sell them, as they were not damaged by the money shift.
Rocco at RMP is a pretty damn cool guy who knows his BMWs. I highly recommend them for anyone anywhere near Toronto.