twist....
The early 3.2 S models seem to be one of the better bets, but because these cars are now between 12 and 14 years old, they can be subject to many problems depending on their past owners or service life.
If you like a little interesting reading go to
Porsche servicing, repairs, engine rebuilds, reconditioned wishbones and cars for sale - near Bolton, North West England. and look under Buyers Guide. Barry Hart (Hartech guru owner) is the UK equivalent to Jake Raby's Flat6 outfit in expertese regarding the Porsche M96 engines.
Hope this helps in your decision.....