hi all,
i'm mating an '85 617 with a 4-speed and i'm not wild about trying to find in the US the heavier flywheel this is supposed to take. i have read reports that the lighter flywheel from the 616 can be used successfully. only the latter needs to be rebalanced, right? (perhaps the machine shop doing the balancing could also add weight to the wheel?)

do you guys driving a 5 cylinder engine with the light flywheel kill the engine any more often than you'd like?