[Tigers] help w/a Shelby part number

[Tony Somebody]

Yesterday I was in the back yard storage building and happened upon the box my accel distributor came in. Feeling heavy I opened it to find the dist. the PO had installed in my Mk1. I then remembered I also purchased two others at Suni for the purpose of reselling them. All 3 are dual point Mallory distributors but one and Im not sure if it was my orginal or one I just bought, has a Shelby tag in place of the Mallory on the other 2 units. Now my mind goes to thinking that this has to be an orginal Shelby car SBF part. Which car is anyones guess but obviously made by Mallory for Mr.Shelby. Try as I might I couldnt match the numbers with any on the net BUT I also wasnt able to get the proper place to find out what the numbers would indicate. If anyone, perhaps a Cobra owner as I know we have a few amongest our group, can shed any light on what the distributor was used in, it would be greatly appreciated. Under Shelby on the tag is GF JA-B   ( it appears to
 have a space between the F and the J) Under Mallory to the right is YL 5551-A2  I found a number that was close but was a FE number, which I think refers to a big block as opposed to the FE on our VIN tags standing for Ford Engine.
Thannks in advance for anyone that might know how to find the car that this was used on.
TonytheTiger