Hi Rick,
Did you find the rear shock mounts for your 48? I have an original set of the Ford tubular shock mounts in my collection of stuff. I can also save you on the shipping because I grew up in Saratoga and my best friend still lives there as well as some of my family members. In any case I'm frequently in Saratoga.
My e-mail is jen.toby@yahoo.com and phone is 802-869-2688. Thanks, Toby Lampert