Here is the answer to packaging exhaust and boiling the fluid in the OEM clutch slave for Ecotec and K-Motor swaps. The Ecotec Miata Internal Clutch Slave Kit works with both Ecotec Miata Swap Conversions and K-Motor Swap Conversions. These tried and true conversion kits work with any swap that uses a Miata 5-speed or 6-speed (K20 and K24 motor swaps included). It’s easy to install, utilizes the OEM Miata master cylinder, bleeding process is very straightforward, and requires zero shimming or adjustment.
 
With hundreds of street and endurance racing hours in the development of this product, this is the silver bullet for one of the biggest challenges of swapping a Miata with a modern 4-cylinder engine. 
 
Eliminates the problematic and failure prone OEM Miata clutch slave.
We have even had BP engine users ask if this will work for them, and the answer is "yes it will"!
Pedal effort is unchanged and customers have even reported better feel.
Retains the use of the OEM Miata master cylinder (no expensive master or adapter that requires adjusting the clutch pedal
The Ecotec Miata Internal Clutch Slave Kit is not clutch brand sensitive although we recommend our Clutch Kit especially if you are an Ecotec user with our Billet Flywheel.
 
NOTE: This kit does require a long braided clutch line as a part of the installation process due to the bleeding procedure (see instructions).