When I dud up my 55 I used them all.The Classic parts which used to be Chevy Duty was my first choice due to the shipping time.Livig in Ohio it took a long time to recieve an order from the west coast.But with Chevy Duty being in KC it was only 3 or 4 days at the most.

http://www.dalesclassics.zoomshare.com/0.html