If you replace the carb with the RX carb, and replace the backplate with the RX backplate pump, it will for all practical purposes be an RX.

The only thing the EFI really did was control fuel flow based on RPM and throttle position. Yes, it also had a temp sensor, but I flew them many flights without the temp sensor connected.

Timing is not an issue. Timing on a 2C is controlled by a combination of compression, heat range of the glow plug, and mixture, and this will be the exact same as a stock RX.

If you want a great deal on a 2nd low time EFI (with Shadel piston/liner, SS BB, new rod), PM me.

Regards,