I just checked for my 86 Golf 1.6 NA, and this site lists a 90 amp. http://catalog.eautopartscatalog.com/archsoftware/canadiancarparts/wizard.jsp?partner=cheap&year=1986&make=VW&model=GOL-D-001&category=F4&part=Alternator&partnerSession=c1d54fd05afdd8bdfafdff507a4db422
92, that's still V-belts, right?