I recently purchased a 1974 350 auto from a lady who had it in a garage for the last 6 years. Has 100k miles. Needs front and rear bumber covers, radio has power but no sound, maybe speakers are shot. lots of spider cracks in paint. Questions are, any suggestions for paint and bumber restoration, should I use fiberglass or urethane replacement bumbers. I am bringing car to Ray Zisa at Corvette Center in CT. to get an estimate on what else is wrong. Engine sounds good, tranny has slight "klunk" when initially engaged, but otherwise shifts fine.