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					Originally Posted by JayG  I am actually thinking about buying a Miata for a track car.They are much much less expensive to build and fix. A Miata motor can be had for under $1k. I know several guys running Miatas for the track and several have dropped superchargers or Toyata/Honda motors and are in the low mid 200's for HP. That HP with the lower weight will out run a Boxster at the track.
 
 Don't get me wrong, I love my Boxster, but I can build a Miata track car for under $10k and when it breaks, I don't have to get a 2nd mortage
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There's no question which I'd have if I wanted a track day car: Miata. 
Miata's are stupid simple to work on, there are a TON of reasonably affordable parts available, the drivetrain is basically bulletproof for track work (only needing a coolant reroute kit for really extreme duty), and as stated they have a better suspension design.
No way would I track a car with an M96 unless it was built by LN engineering with an iron-clad solution for each problem that the M96 presents, many of which are amplified by extreme duty and high G's. And then I'm $15k+ into a car that still needs $$$ in upgrades (suspension, brakes, cooling system, seats, roll bar, etc).