Consider it practically new. Mocked up on project motor, run on a stand, but no miles. Matching doghouse is already sold, so just the TB and a gasket. $199 + UPS Ground from 98226 + 3% if PayPal.
It definitely bolts up to the stock doghouse. I had it on one during the mockup before switching to a Hemco. And SStealth is correct. You'll need to bore out the doghouse inlet.