71 GY3 Dart Swinger $850.00

double checked the rear end.. .definitely not an 8.75". I think it's a 7.25"

Here's some new pics of the underside

<img>http://calgecko.smugmug.com/Automotive-Photography/Cars/Parts-Dart/n-tgdRq/i-5fvsz7q/0/L/i-5fvsz7q-L.jpg</img>

<img>http://calgecko.smugmug.com/Automotive-Photography/Cars/Parts-Dart/n-tgdRq/i-c9qhjm5/0/L/i-c9qhjm5-L.jpg</img>

<img>http://calgecko.smugmug.com/Automotive-Photography/Cars/Parts-Dart/n-tgdRq/i-LS6nGkX/0/L/i-LS6nGkX-L.jpg</img>