That looks like a Simmonds hood not an Easy Up. Interesting that it is compatible with the hard top.
It is indeed a Simmonds hood, and I think that's why the hardtop is compatible. The rear of the Simmonds is held by two over centre clamps just like the hardtop, and at the front the Simmonds channel doesn't require any gubbins to get in the way of the header rail of the hardtop.
I love the idea of a hardtop, but with a short-door car like mine I think it would entry and egress a challenging experience...
