Copy of Owners Manuals included. Bass knob turns all the way around, still works. Will l ook good in that classic car. I have personally gone through the deck and replaced belts, lights, fuses, wire, resistors, capacitors, transistors, ICs, switchs, and any parts that put the unit back in full functional operation in order for the deck to perform and last for many more enjoyable years to come.If you need anymore info, please ask and I will respond quickly. Check out my other products to come. Shafts center to center 5 3/4in. Check it out on YouTube... The item "Vintage Pioneer KEX-20 am/fm cassette component car stereo withGM-4 amp Chevy Ford" is in sale since Sunday, October 7, 2018. This item is in the category "eBay Motors\Parts & Accessories\In-Car Technology, GPS & Security\In-Car Entertainment\Car Stereos & Head Units". The seller is "dsmithhsdtech" and is located in Stockton, California. This item can be shipped worldwide.