Lot's of things transfer and some get replaced.
All you really need from the 99 motor is the block, head, intake with it's accessories including VICS controller and fuel rail. You will reuse your accessories -alt/ps/ac, CAS, throttle body, header, valve cover and coils. You will need to make a bracket to relocate the throttle cable a bit. You can reuse your EGR but there is some modifying to make it fit on the 99-00 intake. I just made block-off plates and eliminated it completely. You reuse your crank sensor
Other things to consider at the same time.
- Mazdaspeed motor mounts
- Clutch and flywheel,
- Tapping pan if you plan on running a turbo (I can tell you what I did)
- Coolant reroute
- Silicone coolant hoses
Plan to do a timing belt job. New cam and crank seals, timing belt, idler and tensioner pulleys, rear main seal and might consider transmission seals as well.
To operate the VICS with a stock ECU, you will need a RPM switch. MSD makes one. Check with trickyrix as I think he had one and doesn't need it since he has a MS PnP. Otherwise, Jegs, Summit Racing and Amazon should have them.
Swing by this weekend and you can see what all I did as the motor is coming out.![]()