I have a a '90 Sedan Deville. To be honest my friend was telling me that rebuilding my engine would be a waste of time, because the manufacture makes it hard to find rebuild kits for this year. I search the web and cannot find any performance parts for my caddy, no crate engines...nothing..... Do i have to swap this engine out for something that gives me more performance? I do not want a street rod caddy or anything, but I would like a performance engine in my car. Are there not aftermarket cams and stuff like that for my year? I always search the web and come up empty. Are there other engines I can swap out with? WHERE ARE THE PERFROMANCE PARTS AT... RAARRR!!