quote:If there is anything that you do to the car it is imperative that one maintains the proportion of the width ratios front to back.
FWIW, DeTomaso switched to 8" Campys for the front on the competition cars (along with 10" Campy's on the rear). 8" Campys on the front will improve handling characteristics of a Pantera over 7" Campys because the wheel dimensions provide a better scrub radius.
The stock tire sizes were: Toyo Proxes being used on 15" wheels now:
Fr: C60V-15, or 215/60-15 Fr: 225/50-15
Rr: H60V-15, or 255/60-15 Rr: 295/50-15
Size Sidewall Height Section Width Overall Diameter Ratio Fr/Rr
215/60-15 05.08" 08.46" 25.16" 84%
255/60-15 06.02" 10.04" 27.05"
225/50-15 01.77" 08.86" 18.54" 76%
295/50-15 05.81" 11.61" 26.61"
When you run 8" wheels all the way around, yet mount the currently favored Toyos in the sizes noted above, you still maintain a sufficient difference between the front and rear section widths. Actually, these tires result in an increase, albiet nominal, in the ratio of rear section width to front section width over stock.
So, go ahead and put 8" Campys all the way around your car. The tires you mount will maintain the proportion of the width ratios front to back and actually reduce any trailing throttle oversteer tendencies more than the stock tire sizes did. Most likely, you will want to increase the size of your rear sway bar to compensate for the car's tendency to understeer.