I dug through my iron pile to find the old crossover, cat and manifolds I had removed to install the Downey headers. I cut the flanges off of the crossover. The crossover tube measures 1.5" diameter. Looks like there would need to be a blank off plate for one of the outlets on the driver side manifold.

Thinking I will get some two inch mandrel bends and weld up a Y pipe using factory crossover flanges and the old cat flange. I will test install it on the 2wd auto.

1995 4Runner Limited V6 3.4 Liter 5 Speed 4x4
1995 4Runner V6 Auto 2WD