Just a heads up, ive had one of the 'generic' hei distributors in my 76 for about 5 years and its worked really, really well. So not going to swap to a (duraspark). However, I just went through the topend on my car, its modded with a cam, milled head and machined to take an autolite 2bbl. 6-1 header and have been happy with it. I railed it pretty good a few times and wanted a rev limiter, this seemed the best way to go w/out going too crazy, and the multiple spark feature seems to be a good benefit. Has anyone run one of these ignition modules and seen improvement in general performance (v8 or I6)? keep in mind, its a street driven car so im not looking to shave tenths.