Been looking at these year Vetts to buy. I talked to a guy with a 90, and he said it had a new GM crate motor for that year. I thought that years came with Alum heads, but he said he thought they were not alum. Didn't that year have them? Also it has the suspension that you can adjust, to different rides. He said the light is on and does not work. Any Idea how big a deal to fix? Also can you just put on regular shocks, and not use the settings?