v6 5psd will not fit. You're stuck with the km145.

I think it's:

shift fork spring pin came out or broke
3-4 syncro failed

Try pulling the tranny bottom pan and see if there are any bits in there. Drain tranny juice over a magnet to look for fines. Move the shifter and see if the 3-4 shift fork moves.

Last edited by fasteddy; 06/04/12 11:17 PM.
Not responsible for advice not taken...