Parts?

Hi,
Where's the best place to get SU rebuild kits?  I need one for an
HIF-6.  I'm also looking for a volt gauge that looks like the later
Midget Smiths gauges.  While I'm at it, if anyone has a used soft top
for a '73 Midget, I could use something to keep the weather out.  I
don't want a $100 top in great shape.  I want a cheap (read free) top
with holes and cloudy windows that I can duct tape.  I found some black
(gaffer's tape) duct tape.  TIA
Cheers,
Derf