Another choice is to stick with the 13" rims and go to Coker tire. They have P195/70-R13s in a passenger car tire (kinda pricy). I just got some P205/60-R13 BF Goodrich Radial T/As for a Mustang II delivered to me last week from there. These will lower the car about 10mm (which can be a plus in my opinion). I have (2) Pintos, one is already on 14" rims - but it has flares, so I can't say if those will fit a stock suspension. My other car will have 14" when completed (also not stock). The 13s are still a possibility if you want to stay more stock looking (or have real cool period 13" rims, like my M-II)