Personally I would dremel off the origional fittings, drill the propersized holes for 3/8" NPT fittings (probably about 3/4" or so) then used a proper ammount of plumbers goop and seal in 1/2" barb x 3/8" NPT fittings. You could solder in the new fittings, but I bet it would f-up the paint on your black ice and you'd hafta sand and paint the thing again.
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