Bongo Fury

After replacing the front drop links and having to angle grind the rusted solid nuts off, I'm anticipating having to do the same for the rear .... what size bolts are required and where can i get em from??

Cheers in advance

When I replaced my rear drop links recently, all the nuts came off fairly easily using a decent socket. I soaked them overnight with plus-gas first though.

I'm sure someone will know what size they are if you should need them.