2004 Mazdaspeed Miata With Honda K24 Engine Swap Isn't Your Average MX-5

The Mazdaspeed Miata also happens to be a scarce breed at 5,428 units produced for the United States market, but despite the rarity, a wonderful madman yanked out the original powerplant in favor of the Ultimate K24A2 Miata Swap Package. Available to order from $5,549 from KPower Industries, this upgrade revolves around the 2.4-liter mill of the Acura TSX.

However, this isn’t a plug-and-play swap. According to the listing on Cars & Bids, the vehicle has also been treated to a Hondata K-Pro 4 engine control unit, custom exhaust from VL Performance, a manual steering rack, and BC Racing BR suspension instead of the factory-supplied Bilstein shocks.

Additional mods include an ACT clutch, 949 Racing wheels, a fuel pump and injectors from DeatschWerks, a Mishimoto radiator, and a Flex Fuel sensor. There are, of course, a lot of problems with a tuned vehicle this old, starting with an accident reported in July 2008 that resulted in a replacement rear bumper. Scratches are also visible on the hood, spoiler, and quarter panels, there’s a dent in the passenger-side front fender, marks can be seen on the driver’s seat, and rust has built up on a few underbody components.

Be that as it may, the seller assures that his K-swapped Miata is mechanically sound. The engine swap took place “less than 1,000 miles ago,” and better still, the fully-reconditioned K24 lays down 237 horsepower and 166 pound-feet (225 Nm) of torque at the wheels without skipping a beat.

Chassis number JM1NB354740407042, which is finished in Velocity Red Mica over a black-and-red interior, currently stands at $10,500 after four bids. If you want a chance of getting your hands on this high-revving roadster, you’d better be quick about it because the bidding will end in a day.