IMO the LC4 is a sound design which was high tech when it was introduced (4 valve head with roller cam followers, water cooled). They are handicapped by their bulk, weight and 5 speed transmission. I would suggest you consider only counter balancer equipped LC4’s as the non counter balancer motors are real paint mixers! Mid 90’s or newer with a counter balancer should be OK. The bikes themselves are large, tall and a little heavy but they are well made and the newer ones are quite durable.