Choices...Choices

[nostatic]

from what I've been told $7500 for a crate Boxster engine. They don't rebuild them, they just swap them. The spec Boxster series mandates stock engines, so opening them up isn't even an option.

[tc-sacto]

Keep the 951 and buy a spec-miata for racing. Very cheap to run and probably faster lap times than your stock 951. I see fully preped- used ones in good condition for less than $10,000 all the time.

[David]

I drove a spec-miata at the track a few weeks ago. It was a lot of fun, but I hear you won't come away from a race without dented fenders. Since you're required to not to have dented fenders at the start of a weekend, I would imagine it could get kind of expensive too.