We started a 6.0 project over here. More supposed for singlehanded sailing, it got the 3.3m wide 18sq beams.
Landenberger made a quite expensive 19 sq MAXX mainsail for it... which didn't work well. Switched to a boom and a standard triradial Torndado main and that was really the right move. Spi is also from the Tornado. Snuffer is the simple and affordable aluminium ring like produced by AHPC in Australia. Works great. Selftacking jib is the next move on the list. So what I am trying to say is that if you are interested to save money try to get second hand Tornado stuff. They had a time when they had frontbeam sheeting and not selftacking yet. Those sails you sometimes can buy very cheap although they havent been used much. For the jib sheeting, we did the same modifications to some of our Taipan fleet. Instead of investing into a selftacker we just moved the rails and blocks to the frontbeam. You suddenly enjoy a free trampoline which allows your crew much more space. Your investment is only a used T jib and two blocks to make sheeting from the frontbeam a little easier. Anyhow, Murrays also have a selftacking system 'ready to go' in store suitable for the 6.0.
With a selftacker you will need to modify the rotation arm setup than, which would basically be easy if you change to a boom as you than can easily just flip it backwards and sheet it (like on some A cats and Tornados) from a hole in the tramp and a cleat close to the daggerboard. You actually can use those camcleats already there from the old jib tramp wire system.
So the simpliest modification would be to just invest in a 2nd hand or new jib and move your blocks and rails to the frontbeam and get the AHPC snufferring and bag. If you want to change mainsail to a more modern squaretop shape too, I strongly advice to change to a boom too.
Nacra Europe build the Nacra Se around ten years ago. It featured 2.8 m width and a taller carbon mast, a boom, a frontbeam sheeted smaller jib and a spi (no snuffers yet at that time) and outsailed the Tornados when Mitch Booth and Scott Anderson still talked with each other and sailed it Round Texel those days...
