Ahh, i've been waiting on someone to question me in that department! Gearing ratios are not an area where I cared to venture in as my gearboxes have faired very well in supporting my highway battles. Back in 2000 when I was clocked by a state trooper @ 173mph in a 55mph zone I was in my own B12 sedan with 14in Pulsar wheels with 185/60 tires. I had the Pulsar's gearbox and before I saw the blue lights, I recall the RPM needle being around the 7700ish range. Engine temperature at 175 degrees farenheit at 12-15ish psi of boost from T3/T04 60-1 turbo. As explained to the rest of the forum I did not go to jail nor did I get a ticket mainly because I think the guy was amazed that my P>O<S sentra tripped his radar at that rate of speed and the fact that I wasn't racing anyone, but merely tuning at 0130 in the A.M. I have a friend with an SR20DET in his 200sx running 14psi and after 140mph he's a thing of the past. Same Case, different friend with an S2000 whereas he struggled to get his car to 155mph and I left him standing still. Other guys on the boards can testify after seeing the videos that my car can and will exceed the limit of the speedometer which is 125mph. Here's a little something to think about @5300rpm I'm already going 125mph and my rev limiter is set at 8500rpm and the engine has been known for wanting to go that far. I've had plenty of guys w/ Supras, Corvette's and RX-7's chase me at those rate of speeds and find it to be pretty hard to close the gap. So as far as gear ratios go, I'll be lying to you if I told you I knew them, but I assure you my girlfriend's B12 see that speed on a regular basis and my own B12 will smack hers up. The difference between my girl's gearbox and my old one is, hers is a Jap spec which seem to hav a more relaxed final drive whereas the pulsar's tranny is geared more for drag. My new tranny is neither pulsar nor jap spec bluebird, but that of a 1992 nissan maxima SE with helical LSD which is mated to the pulsar's bellhousing. If interested, I'll keep you posted on how my new car w/built engine and tranny goes and trust me I spared no expense this time around. And BTW her engine is stock except for the stand-alone fuel management and the 550cc injectors.