will a chevy 4.3 v6 swap into a 95 4runner w v6? If not, whats the best engine?

 

What ever is your favorite Engine with a large enough budget any swap can be done.

If is is practical that is another debate .

Thing is the really strange swaps your pretty much on your own.

Best Engine has to be the Cat 3406

 

I think the Cat 3176B may be a but more suited, he may find fitment issues with the 3406, plus the 3176B will be mechanical so easier to fix. Bahahahaha

Sorry, OP, I loved this comment and couldn't resist.

 

tons of info in this folder
https://www.yotatech.com/forums/f159/

 

Ok in all seriousness look at the 3.4 swap in to your rig. Should line up with the existing motor mounts and I believe you can get harness conversions.

The 4.3 is a good motor and used to be a popular swap. However it is a more complicated swap that the Toyota 3.4 and that has plenty of power for you runner. Good mileage and great longevity.