I've seen this sled on ebay posted 2 or 3 times in different locations in the last 3 years. Beware though as it sounds like the owner has a severe case of Bullsh!ting from the stats he wrote up on the sled. For one, at 6 pounds of boost that sled is knowhere near 225 h.p...lets try more like 185-190 h.p. and that sled would be lucky to make 225 h.p. @ 12 pounds of boost with a perfect tune and straight race fuel. Also, with that tall longtrack M-10 suspension you'd be lucky to hit 115 unless you held it open for 2 miles. The turbo is a Aerodyne Series 53 turbo 143N-300A is only good for short pulls at max boost of 12 pounds for around 225-230 h.p., never 500, LOL!
I don't want to sound like I'm being a hardass, but I just hate seeing guys get bullshited and coaxed into buying something with false expectations.
Have a good one guys!