If you're sick of those old, under-performing alternators, then a rebuilt, high performance unit is the hot ticket. Unfortunately, the 50 amp circuit breaker Chrysler used, in series with the alternator output, is not up to the job. (That’s how I learned what those "50" amp relays were for.) When I could not find a suitable I used a 50 amp unit from NAPA ($30) and wired it in parallel to the stock breaker.