I vote for the '69 in St. Louis per TMM other than 273 in lieu of 318 it's a fit maybe.
Otherwise see # 19 Mustang or udder troll or . . .
Dan, what's up ? As time goes by, prices rise and hopefully you add/save monthly to your budget. Focus on one year, model, color and options. Notify all concerned AND increase your search radius.
I'm not that particular as knowing me I'll enjoy it 'til I at 62+, beat the livin' **** out of it like a 20 year old.