Bandit 15 Boom End Fittings

I have a 1977 Bandit 15. The boom is 2 1/2 inch round aluminium. The cast aluminium boom end fitting on the outboard end has disintegrated and I need a replacement so I can reattach the outhaul pulley. Looks like the end caps are actually the same on both ends.
Anyone know where I can find a replacement boom end fitting for 2 1/2 inch round tubing?

If I can't find a replacement, any good ideas for changing the rigging of the outhaul so it doesn't rely on a pulley attached to the defunct boom end fitting?

Thanks

Have two Bandits. Have no idea where to find a replacement cap. I will have to take a look at my booms to see if anything comes to mind.