3.4 in 95 4Runner...
 

I have a 95 4runner with a 3.0 and an auto tranny, i want to put in a 3.4, but dont know if the tranny will hold up to it. eventually i would also like to add the supercharger. will it hold up?

Search around for it. There are plently of threads up here that contain all the info that you need. There is even a current swap going on. The search is your friend.

Read up on here as well
http://offroadsolutions.com/