I have seen the 917 for sale at a few SVRA events. It looks to be an extremely well done tube frame replica with a Porsche 3.8 6 cylinder and a 915 gearbox. It is located in Ohio and I believe it has been titled and road legal. It did not appear to have any creature comforts as far as a road car goes.
The owner shows up to the races in a semi with 4-6 high dollar formula, sports racer, and can-am type cars as well. Somehow ($$$???) he managed to get SVRA to allow him to race the car in group 5 Vintage which is where a real one would be allowed to race.
Last year I was on the track at the same time as the 917 at Mid-Ohio during practice. I only lapped it once in my 1750cc Alfa Romeo GTV.(DOH!!! I hope it goes better than that)
I understand it has been on e-bay and not met reserve @ $145,000 more than once.
Other than that, I can only say it is an absoloutly stunning looker.
Andy