TRE: All years AWD only.
Find yourself having to shift into 2nd gear in a hurry because 1st is too low? Send your AWD transmission here upgrade to the GVR-4 input shaft & 1st gear. It's about 6 mph taller than a DSM 1st gear and it will help your 60' times. The other benefit is that the ratio difference between 1st & 2nd is closer. This makes it easier on the synchros and will help keep that big turbo spooled.
(TEL) 1st 3.083
(GVR-4) 1st 2.846
$200 single synchro 1st gear
$325 w/double synchro 1st gear
AWD only
DSM Tuners: http://www.dsmtuners.com/forums/showthread.php?s=&threadid=85995&highlight=1st+gear+gvr4