TXRick looked into it, but don't think it went far. Here is the link.
http://www.toyota-4runner.org/3rd-gen-t4rs/145164-2003-seat-install-today-write-up-advice.html
I try on the passenger side seat, grind off all the feet from the 3rd gen seat.
I only weld 1 feet on the 4th gen seat rail, I made the bracket for all the rest of the bracket.
It fits perfect n it slides nicely.
No pics? It didn't happen.
3rd gen seats are awful and kill my back even on short trips. Even the lowest mile seats I could find still left me basically riding on the seat frame with little to no lumbar support, so far I've swapped the camry seats, inifiniti QX4 seats, pathfinder seats and a set of Sparco buckets in, all of which have been better than factory.Are people trying this because their 3rd gen seats just look ratty or to get a different seat base?
I just put upper and lower replacement genuine leather replacement covers in my 2000LTD with oak interior, and they are a perfect match in both pattern and color. While I was in there, I replaced both foam lowers and added seat heaters.
The OEM seats look absolutely factory fresh now. If I had to do it a second time, I could do the whole project on a Saturday afternoon easily.
Ah, well different needs then. They are really comfortable for me. The foam under the covers does definitely break down over the years, even on a 50k miler if you could find one.
I couldn't find anyone making a new back or "upper" foam, but they do make the lowers. After I got the new one in, I felt like I was sitting 4 inches higher in the truck and I remembered how I barely fit inside when I first got it.
That would certainly fix the "riding on the seat frame" issue.
Where might one find replacement foam for the seat bottom?
Are people trying this because their 3rd gen seats just look ratty or to get a different seat base?
I just put upper and lower replacement genuine leather replacement covers in my 2000LTD with oak interior, and they are a perfect match in both pattern and color. While I was in there, I replaced both foam lowers and added seat heaters.
The OEM seats look absolutely factory fresh now. If I had to do it a second time, I could do the whole project on a Saturday afternoon easily.