SPI Engine Hacks

Acell Coil upgrade for the SPI motor.
Upgrading the coil pack on your SPI can give you better throttle response, more power, and maybe even better gas mileage (if you don't get lead-foot-syndrome from the benefits of it!) FlaFocus shows us how to do it!
SPI - Throttle Body Swap usng Modified Mustang TB
Installing a Mustang's TB on an SPI engine can increase airflow to the engine. For a kick in the pants, try this out!
Modifying a Mustang Throttle Body for SPI use
Unless you have a pre-modified mustang throttle body, you'll have to modify it before installing it on your SPI Engine with an adaptor plate. This is how to tweak it.