HEI question

[Epic]

I have been trying to sort out all the posts about this HEI thing, But stuck on a few things.

What does it do, replace the ECUs job of running the ingition?
Do I need an external coil, or will it work without?
As far as I could see on the wireing diagram in the FAQ, all the work is done in the engine bay?
Will it still work If I do a 2.5 swap?
And last where can I get one? (and anything I might need to do the job)

[V8KOMX3]

yes u have to have an external coil if your internal is failing. It will work with a 2.5 swap, all the work is done in the engine bay. You should be able to get one at any auto parts store external coil u can get online at any number of performance auto stores or from an msd dealer. O and please use the search function thats what it is 4! You will find yourself getting ripped into hard by a good number of members for asking these questions because they can all the answers can be found using the search. I even think this is posted in the FAQ forum. Good Luck

[Kirk95gs]

You dont need an external coil to have the HEI module. The exteral coil is an option you can do to upgrade from your stock internal Or as a fix if your stock one has failed. Check out the FAQ there is a link to clubeprotege that has a walk through. should be all you need. You can get a GM HEI module at any parts store.. From $30-$60 depending where you go.