Is it possible to replace my nylon suspension arm mounts on my TC3 with the FT aluminum TC4 ones, or is the geometry and parts too different? Or, does anyone know if a company makes nice aftermarket mounts for the TC3? I've looked around and been surprised that I can't seem to find any....

go to www.towerhobbies.com and compar the specs if the same they will work ill take a look for u too

Several companies made them for the TC3 you still should be able to find them.

I wouldn't hack up something because the alignment and sizing of these make huge differences to handling.

he is right

Cool. Thanks for the feedback everyone!

They will not work. The screw spacing is quite a bit different. Also the hinge pin size is different