I have a 1997 3.4 5 speed. I Bought a parts 4 runner with r150f trans. When I looked at the door tag on my Tacoma it's a r150 with no f. Has anyone ever heard of this? I always thought the r150 was 2wdr and the r150f was 4wdr. Any help would be great. Worried I don't have a spare trans now. Thanks