There weres some early issues with the C32 & C32A wihich have been worked out (common when new engines are introduced). The 1480 MTU is a great...
You refer to the 57 being a convertible, you may be looking at the just released VIking 57. THe one I was referring to is produced by Marine...
There was new 68 Choey Lee that had been for sale for years down here in Florida, don't know much else about it. I have done alot of Viking Sport...