i did this conversion well over 12 years ago with a tub from aqualu and some spare fj45 body parts that came with my original fj45 that i bought.. i originally built my 45 based on a short wheel base 45 but has changed quite a bit over the years.. it was built on the original 40 frame that i stretched 14 inches in the middle..
the body now sits on a diesel 60 series rolling chasis complete with a 3b toyota diesel, 5 speed and splitcase...
is there a build thread for this? search engine only goes back 2 pages