[Perfectlap]

$25K? That's a nice sized budget for a 2nd hand Boxster/s.
Lots of Boxsters sitting on lots, I would neogtiate very aggresively. Don't feel obligated to pay 'market' as that various greatly with this car and depending on who is selling.

It's going to require some leg work but you can definitely pick up a 3.2 with under 40K miles with your budget.
This is a great time for a Boxster buyer. I'd look for the lowest mileage BoxsterS.
The difference in price between the 2.7 and 3.2 just isn't big enough to pass up on the extra power which cost way way more to do after the fact.

You can add replica 18" Carrera wheels for $800 and nice rubber for the same. I might factor in that mod into the budget if the car has everything you want but the wheels.
THe HID lights are expensive if they aren't on the car already.