I'm with the leave it alone or at most cut the belt crowd. Well, I'm actually with the fix it and have working A/C crowd but in RI, it is not like you need A/C as bad as we do in TX.

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1991 F250 super-cab 7.3 IDI. (rebuilt by me) Banks Sidewinder turbo, hydroboost brakes, new IP and injectors.
2003 S430 - 107K
1983 300SD - Tanoshii - mostly restored ~400K+.
1983 300SD - Good interior. Engine finally tamed ~250K.
Monark Nozzle Install Video - http://tinyurl.com/ptd2tge