Replace your Syncro transmission with a Subaru transmission. The Syncro transmission has the output for the tailshaft at the lower part of the transmission whereas a standard Subaru has the output for the tailshaft at the upper part.
This kit allows you to remove the standard Subaru rear plate and transfer gears, replacing them with this Syncro rear plate, oil seal, output shaft and tailshaft drive flange. The propshaft is now moved to the lower part of the transmission, clearing the chassis transverse rail. This 5 speed kit is made to suit transmission types TY752 / 753 / 754 / 755 / 757 / 758