I have a 1993 SC-2 that just passed 100K. I took it into my mechanic to get some other work done, and he suggested that I replace my spark plugs and spark plug wires (for 0) and the accessory drive belt and tensioner (for 0). These prices seemed to be excessive, especially for the plugs and wires. Can anyone help me out with how hard these jobs are and whether a reasonably handy person could tackle them on his own? Thanks in advance.