[quote name='craigawoodman' timestamp='1340419772' post='128465']
We had an electrician come around who had put a 6 cylinder Subaru motor into a VW Transporter - to me that is good thinking. How do we feel about people putting 6 cylinder Porsche motors into Kombi's, etc?
[/quote]
Perhaps the Kombi (Vanagons) are the most common engine conversion around, it is done all the time. Most common are the 4 cyl Subaru (2.2 or 2.5 liters), and the 4 cylinder inline VW (from Jetta, etc.). Recently an excellent kit came on the market for conversion to the Ford Zetec engine. Some have the 6 cyl Subaru but that one is not legal in California. For Vanagon, an engine conversion is seen as a very good thing, the value goes up significantly. There are a few Vanagon conversions around to a Porsche 6 cylinder, it can be done, but the cost is high compared to the other options; and it is taller, so you also have to modify the engine cover and may loose the ability to sleep in it; and since most Vanagons are water cooled, there is no need to go to an air cooled engine. And there are also subjective opinions like with the 968: some think the conversion should like the original boxer engine (only Subaru), some think it should be in the VW family (in-line 4). There are many kits and parts and help to make all these conversions easy enough to do in your driveway.
Now back to the regularly scheduled program (V8 in a 968). It doesn't feel right to me. If you'd like a higher performance 968, follow these steps, at least this would be my suggested sequence.
1. go to performance driving school.
2. tune the suspension, reduce un-sprung weight (17s or 18s)
3. work on air flow in and out (with corresponding chip).
4. chassis braces and reduce weight (the original Porsche strategy). [spare tire, stereo, A/C, rear seats, carpeting, power seats, etc.]
5. supercharger seems like a great next step.
After that I suppose if you really need more horses, you might get some from a V8, but it seems like there are significant disadvantages. It seems most performance driving and perhaps racing rely on so many factors other than the peak on the HP curve.