LOL... I'd have sold you a fast, championship-winning, ARRC podium Porsche IT car for $12k...

As for suspension - I would not waste my time with the Konis. Get the Bilstein suspension, and have it valved to suit you.

I would also definitely recommend getting the 34mm hollow torsion bars from Paragon, as much more as that car weighs (mine loves 'em).

For header, I have heard good things about the Stahl header, but that was for the 2.5L. Not certain about the benefit on the 3.0L. Certainly the stock header is good.

Give a shout if you need tips on making a front-Porche go fast...