wiper parts needed

I am in need of (1) wheelbox, the center tube that the rack slides in and
the end tube that the rack slides in (the wiper motor tube is ok) for my LHD
74-1/2 RWA Midget with the 3 wiper system.  If anybody has these to spare,
just let me know how much $$.  I have 1 seized wheelbox and the center tube
is bent I think its related to when the car was wrecked prior to my
ownership.  The cowl is bent as well.  Someday I'll get around to fixin it.

Thanks,
Tad