So I'm in the market for an NSX, 91/92 models. Anyway I'm floored at the40/50/60,000 mile cars that have had timing belt service and clutches replaced already. I thought clutches lasted much longer than that. I also thought timing belts/water pump service was required at 60,000. I've actually seen under 40,000 miles getting this done. What gives? That can be kinda scarey for a 1st time buyer. Thanks.