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By far the best bolt-on performance mod you can make to an AMC V-8 is an ignition upgrade. The factory ignition system is anemic and problematic, and as we found out the overseas HEI conversions were questionable at best. We ditched the crappy non-functioning HEI that came with our truck and slapped in a blueprinted Performance Distributors DUI ignition (PN 40820). The DUI is tuned specifically to our engine and now our V-8 revs like it should. The increase in reliability, power and torque is well worth the effort and expense.