Bought the trunk lid from Junkyard Crawl Dart Sport - how to clean it?

DA all the paint OFF, especially clear that is flaking!!!!! That lid has been painted a few times!! like just said.
There is NO easy way to do decent body/paint work.
If you had a $30 palm sander from HF and some 220 grit stick on pads. clean it good and hit it with that and try to get rid of the darn clear crap. might take a coarser grit that will scratch whats left below the clear!