original parts are getting harder to find for the 37 which is know as the Diamond Series. There are a great deal of repop stuff out there. If you will check the Links on this site many places are mentioned. American Classis which helps out here is one vendor. Others are JimCarter, Chev's of the 40's, The Filling Station, Classis Parts, Bowtie Bits, LMC, Truck and Car Shop to mention a few. There are many more. First decide what you want to do and in the meantime check out the online catalogs, or send for a few to get your feet wet! There are several 37 guys around and a couple currently working on their projects. A couple around here are the "experts". So, pull up a chair, stay tuned and WELCOME TO THE BOLT.
You may want to send for the Chevrolet Packet for 37's from the Chevrolet Assistance Program. Its free and there is more info about this in the tech tips or links so take a look around at the top of the page.