This product is required for the mounting of a 0A3 tranmission into a B5 or C5 01E trans mount pair so that you can convert to a B6-B7 S4 0A3 3 piece synchro transmission.
Check out this product page for more info and other parts needed -> Recipe HERE.
Here is a in depth look at a JHM Supercharged, 0A3 Swapped 4.2L C5-allroad: First conversion we did
