I love it when Redneck Engineering works out even better than you planned. Bought this used Mercedes headrest for $20 on eBay. Secured right now with some cheap hose clamps. Test drove down some country roads and I don't think I could have nailed it any better.
Just be careful what you buy on ebay...really check out the seller! A friend of mine ordered a penis enlarger for $50.00, they sent a magnifying glass with a warning not to use in direct sunlight!