Actually the Avanti is very similar to the AT's. At least up to the years AT put a step in the hull.
If you look at the Avanti deck and hull almost identical to the AT. Some interior and winshield areas are slightly different.
AT's have hatch in the middle, Avantis on sides.
Even the instrument panel mold is the same.
I don't know who cloned who, but I like AT's and Avantis, so no matter. (and Hustlers, Cigs. Nortechs, Formulas. and a few others. lol) THis Avanti is pretty well shot to hell, due to a car/boat accident a few weeks ago. Just before KW. I have yet to finalize ins. issues, then who knows what my options will be, so I'm glued to this thread to see the comments about the rides.