28 Apache - used
28 Cigarette - used
272-LS Formula -used
I "think" Scarab built one for awhile, which would be a used boat obviously.
A 29 Fountain might work for your slip size requirement. Again, used.
A 290 Baja might fit as well
Does Sunsation make a twin engine 27 or 28?
Outerlimits in coming out with a 28 I believe, if that's something that would fit your needs & budget, assuming you have one?
That's all I can think of off of the top of my head right now?