...Looking For Some Helpful Advise...


I have a '99 SiR (EM1) track car (B20/B16 Frankenstein) that I use to compete in Time Attack events. Recently during a test day, my S80 Type-R differential failed inside my stock EM1/B16 transmission.


I'm now looking to upgrade to an aftermarket LSD, and a 4.7 final drive. I'm leaning towards either a Gear-X https://www.gear-xusa.com/ OR a MFactory MFactory Competition Products - Performance Driveline Components final drive.


But I'm not sure which aftermarket LSD I should be buying. OSGiken https://osgiken.net/c-1280300-limite...-lock-lsd.html is a contender.


Reliability is top priority, followed by Cost, as these parts are not cheap. The car sees no street driving, and is a dedicated track car with just over 200whp. Any advise, and where to source these parts is appreciated.


Thanks in advance!




Shannonville Long Track - August 2018