Good used "Ultra Long" 5th gear stack
with 25/39 (0.64) ratio for Porsche 944/951 transaxles.
This gear set is great for high horse power/torque engine conversions such as the LS engine platform. With this gear set the cruising engine speed is dropped by approximately 650 RPM compared to the engine speed with factory 951 5th gear.
Factory 951 Transaxle has 29/35 (0.829) 5th gear ratio.
Factory 944 Transaxle has 27/37 (0.729) 5th gear ratio.