3-Step Multi-Step Module Selector Rev Limiter 6AL Compatible It is set up to

It is set up to accept a spread bore carb but comes with an adapter plate that permits the use of square bore carbs

including most aftermarket and OEM gauges

Available for small and large housing ends commonly found in all of the popular Ford 9"âÃú rear ends

Speedmaster gear drives are great for you folks who want better timing

these boxes have improved designs

3-Step Multi-Step Module Selector Rev Limiter 6AL Compatible It is set up toThese Speedmaster 3 step module selectors are designed for great versatility. They feature three built in rev limiters one for burnout, one for starting line launch, and one for high end.