I don't know I bought the car and with the car I got a 727, 8.75, headers, exhaust, floor shifter (minus torque shaft), 73+ front end, 489 case, gears and sure grip. He offered me all of the spare parts he had with the car (for more money than I paid) but I don't have room for 2 cars in my garage lol.
Yea that is why I asked about strange engineering DS and or using another shop. Dans said it would be close to 100 to shorten my shaft.