How do I fit this to a single-port?

How do I fit this to a single-port?

The standard manifold diameter supplied will fit the standard 1600 dual-port end castings.

If you have an earlier 40 horse engine (single-port) you can order the kit with a smaller diameter manifold. This then allows you to cut your existing manifold so that you can use the ends to join up to the supercharger manifold.

Another alternative with single-port engines is to purchase cast manifold ends. This will then allow you to use the standard diameter supercharger manifold. The benefit of doing this is two-fold. Not only do they flow more, but should you ever want to move the kit onto a dual-port engine, you will already have the correct manifold size.

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