Does anyone know what the rating for my boat would be? Is the rating different for an older 6.0 (non NA mast)? Or are all Express rigs considered the same regardless of rig set up? I have heard different rumors about this and would like to know the facts.

My boat is an 91 model Nacra 6.0 (non NA). It has been modified with the Express rig. Square top Pentex main, Large Dacron roller furling jib and 455 sq. ft. spin.

Any help appreciated....