I have a jdm b16 and I believe I need to rebuild the tranny. Is it worth it or is there another tranny out there that is worth swapping it with?

 

yes it is worth it, you have a desirable transmission already

 

What makes this tranny good? I realize that my rpm are high all the time, like in 5th gear doing like 60 im at 3,000 rpm.

 

The gearing.

 

just put an ls 5th gear set in if you dont like it
and yes...rebuild it

 

Rebuilding a transmission is one of the only jobs I'm not willing to tackle, but if you're up to it (or you know somebody who will do quality work for a decent price) go for it. I personally would probably just look for a good used transmission (go LSD if you don't already have one). If you do chose to rebuild, an LS 5th gear would be quite useful for the commute.