I have a gear reduction starter (not from GoWesty) in my SVX
conversion.  I was told by Kennedy I would need one for an SVX engine.
Mine works great, although there have been reports of failures from these
units.
After I bought it and put it on, Smallcar said they had been using stock
Vanagon starters with all their conversions lately (last year) with good
results.  They said the 87 and up vans had upgraded starters.  If they can
start a high compression 3.3 liter 6 banger, I think I would try to stay
stock.
    As far as cheap NAPA (or any other stores) rebuilds, I would avoid
them.  I have had nothing but bad luck with all of the rebuilt stuff I
have used.

John