Steve, I found a wealth of Bosch info on the Internet. 0280150158 is the stock part number, almost impossible to fing at less than gold standard prices.
After reviewing a spreadsheet (
http://www.nojac-competition.com/web/IMG/pdf/INJECT.pdf )compiled by someone who spent a lot of time putting it together, I winnowed out some interesting possibilities
After sorting through the HP side of the graph, I found these in the 028 150 XXX family
First:
G/Min. CC/Min. Ohms
028 150 158 Stock 179 229 2.4
028 150 165 Jag. 182 233 2.4
028 150 360 Ply. 186 238 2.4
028 150 364 Pont. 196 251 2.4
I got the 028150165 on eBay for $35.00 each, we will see how it goes, the 158, and 364 are unobtainum and the 360 is available at reasonable prices,but unless I am missing something big it seems like the 165 is the best fit. The only down side that I can imagine is the 165 is for a water cooled Jag, and the Porsche in this circumstance is aircooled.
Thoughts?
Eric