Foose 17x8 4.5 bs on 67 Dart ?

Just got off phone with them and they only have 17x7 4" bs and 17x8 4 1/2" bs which they guarantee will fit, 7's in front and 8's in back. Foose called back with recommended tire sizes, 225/50/17 in front and a 245/45/17 out back. 225/50 25.9" x 8.9" and 245/45 25.7" x 9.7". Rear sounds wide to me.... thoughts?