I have a B18a1 in my car with what I believe is a cable ls tranny...the code on the tranny (on the sticker next to the engine code on the block) is S1 1069151...can anyone tell me if this is the tranny I think it is and also, I heard that the LS tranny should be tached at like 3.5k at 80 while mine is at 4.1k at 80 mph with 205/50/15 tires. I was thinking about putting a GSR tranny in there. What improvement would I see in my quarter mile times and what would my rpm be around 80mph with that tranny? Thanks in advance.