Haltech knows your starting point will be either a Gen 3 or a Gen 4 LS, so the Rebel LS is configured for one or the other; you simply order the version corresponding to your donor engine.

Well, the engine management specialists at Haltech based in Lexington, Kentucky, have developed a quad-turbocharger setup for it. The V-12 is a 9.7-liter (592-cubic inch) monster built by ...

When Jovanis upgraded from a Haltech iC-7 color display to a larger and more capable uC-10, he posted the wiring diagrams of both to keep track of the functions.