I guess that means a trip to the shop....definitely not an easy job. I plan to replace the Bosch starter with the mini-starter one on ebay:
PORSCHE 911 MINI STARTER IMI PORSCHE 912 / 914 / 930 : eBay Motors (item 320466102861 end time Jan-21-10 20:04:28 PST).
Ad says it will fit my '89 3.2 911. JW can you confirm this??