I just put a set of Accel plug wires on my Toyota. Anything you can do to make your ignitiion system, belts and hoses more 'heat resistant' is undoubtedly a good thing. Having changed the belts and hoses on my 325 (at least some of them) on the side of the road, I can tell you that you don't want to have to do it more often then absolutely necessary!
AIR 2053 Current: 2006 Born Free 32 RQ Kodiak Chassis, & 1995 Coachmen B-van
Former Airstreams: 1953 Flying Cloud, 1957 Overlander, 1961 Bambi, 1970 Safari Special, 1978 Argosy Minuet, 1985 325 Moho, 1994 Limited 34' Two-door, 1994 B190 "B-Van"