Mini tub tire size question

The tire I run is 28" tall . 12.30 section width. Tread is 10.30" I have plenty of room on both sides with a 15x10 rim. 67 barracuda FB. Yours is 30.90 tall . 14.1 section. 11" tread. Judging by your avatar and not knowing the difference in rear quarters from FB to Dart, I would say that it would be tight. I think I would have to clearance some shtuff to get that tire to fit with confidence.