$500 + shipping.
Bought it last year. These are the guys that built the classic PTS 9x11 converter, Grumpy went 9's on a 9x11 lockup converter. It has less than 2500 miles on it, mostly highway. Raced on it mid 10's for about five 1/4 passes and maybe twelve 1/8 passes. Works perfectly in a street car around town. 3400 stall isn't that much, you'll get great spoolup with a bigger turbo. My old school TE45a spools 0-20psi boost at the track in .6 seconds or less off the footbrake with it. It is on the car at the moment, this weekend I'll get a picture of it. Reason for selling, going to do more racing than street, so going non-lockup PTC.
On my car, it stalls at 0 psi boost right about 3100-3150 rpm.
http://www.tcsperformance.com/s3seriesconverters.html
Here is the ad w/ pics where I originally bought it:
http://www.turbobuick.com/forums/threads/new-tcs-billet-converter.418069/