Hello from Scotland,

I think I have the driver train from a 1971 Mercury Montego in my 1956 Ford F100 truck.

I have been told that I need a new rear universal joint.

I looked up the parts I needed and not knowing if it was a "small one" or a "large one", I bought both.

Now, to my horror, I am told that the current joint on my truck is a mixture of the small and the large replacements I bought --two of the spider's arms are longer than the other two.

Arrrggg. I cannot locate such a spider.

Can anyone help me???

Many many thanks,

DF