I have a supra with 454 and I scrapped the mallory and put on a stock H.E.I. (You can find them on any chevy V8 from the mid 70's to the 80's.)Put a 50,000 volt tune up kit on it and its strong enough for any dragster, super reliable, and it has better gas mileage. If your 5.7 is a 350 (GM) and not a 351 (ford) it would be super easy with a little common sence. But I heard you can do the same with fords Version of the High Energy Ignition. If you have any questions just google it you should be able to find instructions. (I also put a chevy H.E.I. From a 250 c.i.d on my jeeps 4.2 ltr. works great)
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