I've googled and looked at about 30 different sites and tried searchin a ton of different sets of words but I can't find it anywhere. So if anyone knows the top speeds for each gear on a 6mt can you please help me out. Thanks.

 

You can look here http://www.roadandtrack.com/reviews/...1_g35_data.pdf

Which says:

1st - 38 mph
2nd - 61 mph
3rd - 88 mph
4th - 112 mph
5th - 142 mph
6th - 155 mph (electronically limited)

These don't quite match what the manual says (http://www.nissan-techinfo.com/infin...finiti-G35.pdf), although the manual stops listed top speeds after 3rd gear (they list 85mph), probably for safety/legal reasons.

 

..while waiting for my USNR pay to attain the level for a 2005 coupe (Grubbs "at dealer cost" for military folk eclipses all others.)...........

....I recall my active duty days when my CorVette would go all the way to 60 in low gear...........(but still slower than G35 coupe)....best, ez..........

 

This information is found in the owners manual.