We now have this tail housing new that work with both speedometer gears and speed sensor at the same time for $250.00.
700R4 Tail Housing with Transmission Mount
700R4 tail housing with transmission mount (7 3/8 inches long). This will move the mount to the rear 5 1/2 inches. This moves the rear transmission mount to the same position as a TH400 (short-style) or 200-4R transmission. This extension housing can eliminate transmission crossmember modifications when replacing a TH 400 or 200-4R transmission with a 700R4 assembly. These are almost impossible to find. I’ve seen these at the GM Dealer for $210.00 years ago. COST WHEN IN STOCK $150.00.00, CALL 1-888-2012066.