Ok,
The price hit on the 028 150 158 was spectacular to say the least!
I decided to try to see if I could do better price wise. There is Lucas disc injectors available, but it just seems wrong to put Lucas "Prince of Darkness" electrical parts onto a Porsche. That left rummaging around here and on the Internet to try to find a solution.
I came up with several possibilities:
Bosch injectors various part numbers,
P/N.................... g/pm......cc/pm.....Ohms
028 150 158.........179.........229........2.4. Stock
028 150 364........ 196.........251........2.4
028 150 360.........186.........238........2.4
028 150 165.........182.........233........2.4. My install
My choice is slightly richer, by a very small margin. After a test drive up and down the Boulder Creek Hillclimb (Jamison Creek), I am happy with the install, which took about 1.5 hours, mostly removing stuff that was in the way and replacing it.
Best part is I got the injectors on eBay for $35.00 each and shipping was free. Only slightly more than a flush/overhaul from some of the O/H shops. The injector application is for a Jaguar 3.6 to 4.0 motor. A side note is my car idles about 100 RPMs higher with no other changes to the setup. I also have a Steve Wong chip and cat bypass tube installed(off road use only).
http://www.nojac-competition.com/web/IMG/pdf/INJECT.pdf