does anyone have a mast ball for this boat? the seller said i will needa new one before sailing it.
What size of mast ball? The old 1.25" or the new 1.5"?
If it is a '76 model and it was never upgraded you have the 1.25" ball. The easy way to check is to see if there is a retaining pin, if you have one, it's a new 1.5" ball, if you don't it's the 1.25". The problem is that the 1.25" ball is no longer manufactured, you will have to upgrade the whole mast base: an upgrade kit is available from Nacra to retrofit old boats and include everything you need (casting, base, pin, ball...)
You may want to look at
this thread where I went through the same problem: Tami suggested some other alternatives. Or I can send you Tami's well used balls as soon as I install the new setup on my boat (probably this week-end).