[joefrantz]

Mine looks just like the green one. It's a '73.

Silver, I hadn't noticed the offset of the tab on yours. Also, can you see any evidence that the rivet hole was filled?

Marv, I think the bumper with rounded lip is SWB. You can verify by measuring. It should be slightly longer than the others.

It also looks like the top two holes in Silver's picture of his end cap are similar to the holes in Marv's picture from the back side, leading me to guess that Silver may have an SWB end cap.

I agree with Marv -- best solution is to get the right LWB parts, and shim the tab.

You may want to have an oxygen bottle handy when you look at the price of the end caps.