So I just finished my 3.4 swap in my 1992 4runner. It has the stock auto transmission and the 3.4 is from an auto. Wondering what it would take to manual swap this. What transmission would fit best? Should I get a 3rd gen or a 2nd gen manual? Tried posting in 3.4 swap section but got no response

 

The R150F from a 2nd gen 3.0 truck has a shorter input shaft than the 3rd gen 3.4 trucks and the clutch slave is on the passenger side. The later R150F (3.4) has a longer input shaft (deeper bell housing) and the clutch slave is on the driver side.

Both will bolt on and work but you have to consider where your exhaust will be, where the shifter location is for what you want to do. IDK what T-case options they have though.

I'm running a 3.4 flywheel and clutch, 3.0 bellhousing, R151F transmission and R150F gear set (didn't like the Turbo gear ratios with the 3.4) and two RF1A T-cases. The exhaust on my truck comes down the driver side so the 3.4 bellhousing and slave would have been a problem. I could have run the 3.0 clutch as well.

I have old posts in the 3.4 swap section with info on the throw out bearings and shift forks interchangeability but the pics are all gone. I might have them on my computer somewhere.

I'm guessing that an R150F from the same generation truck as yours would be the easiest one to use. IDK what has to be done for the ECM but it's probably in the stickies of the 3.4 swap section. My swap thread was back in 2012 or so and it was for a 2nd gen pickup with a 22RE. Feel free to shoot me a PM with any questions. If I can help I will. Good luck with your swap if you do it.