Cuda Gas Cap - what are the differences??

[Confederate Cuda]

Can someone tell me the differences in the gas caps for the Cuda's? I have a 73 neck with an old locking cap on it and want to replace it with a regular style. What would fit?? It does not have to be exactly as the orginal, it just needs to work. I will have a SS tank from Ricks Hot Rod shop if that makes any differnece.

Thanks.

[fishn4cuda]

Found one at Autozone for Dons Cuda.

[Confederate Cuda]

Thanks

I'll give that a try.