Do a search under "hood straps" and you'll find quite a few posts on this. This may help for a starter................ http://www.jalopyjournal.com/forum/showthread.php?t=622161&highlight=hood+straps Happy Christmas
The cheapest place you can buy them is , Restoration Supply 800 306 7008 They supply everyone who sells them
Get the springs from Restoration Supply and the buckles/leather/rivets from a harness maker or tack shop. The brass flip over is for a draft horse collar. The coachman loops are stainless steel from West Marine. Made both of these setups for short bucks.