i still have my old Ls tranny hooked up to my jdm gsr block. time to switch it out. i keep hearing that the Si tranny has shorter gears than the GSR tranny. would this be good idea to slap on a SI tranny to my GSR block. i never heard of a GSR/ Si tranny. im sure there is a reason for that though. thanks and where can i find either tranny need on this month.![]()