Oilless Air Compressor motor ?

[streetstar]

I burned out my 6 hp Porter-Cable compressor running a D-A sander (note to self: don't do that again) and it was 2 months out of warranty

The compressor is a 350$ Home Depot or Lowe's type of operation, so it is not a high dollar deal, but does anyone know where i can get a new motor for one?

The local Porter-Cable service people want $200 to install a new one and will not sell a motor over the counter. It only looks like about an hour of labor, -- I would like to do it myself if i could get a motor for a c-note or so because it seems like a waste to throw this things carcass in the trash when everything is like new.

Thx in advance for any guidance offered