the T5 would be as good as the rear gear change, and cheaper - a 62 will be just the same as the 57 really, no better on the highway, definitely no more "practical"
"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir "When we tug a single thing on an old truck, we find it falls off" ~ me Some TF series details & TF heater pics
