I'm trying to get my Tobin Arp TA-14 line bore machine up and running to machine Ford Flathead blocks. I am missing the Ford alignment jigs. If anyone can provide a lead please send me a PM. I have included a picture to give you and idea what they look like. The smaller jigs are for the V8, the ones on the left are Model A, and I think the top ones are inline 6.

 

Check with the guys on the Ford Barn.

 

Ford Barn is a great resource. In two years of searching I have chased many leads. I did find a bar micrometer but the jigs are allusive.

 

I'm surprised your block needs line boring. Good discussion here: flathead line bore - The Ford Barn