A 16 inch with 90 height tire wont drop the bike more than a 1/2 inch.
Frame cut out, have ridden one I owned at at least 100mph, my buddy rode his to Sturgis at speeds of at least 125mph, then raced it(beating a few trailered in Kawis), then rode it home..
The tank is raised on the bike , some use a 450 2win tank for a better look as well.