Early and Late S Calipers Equal Value?

[frankc]

I have early S calipers on my '77 (picked them up a Stoddard swap meet years ago), but I am considering changing them to the late S calipers to be more "period correct" for my car.

If I were to post a trade request to the For Sale forum here, should this be an even trade (assuming comparable condition)? Or would one expect some money to flow one way or the other - again, taking condition into account?

Thanks

[Joe Bob]

Talk to Eric at PMB Performance. He posts on the list.