hey -
where's the rest on the new ICV code...
as for original wheel sizes - as usual if you need a link ERA are a good source.
http://www.erareplicas.com/427/faqs.htm#tires
"...For the 427, we like to use 235/60-15 in the front, 295/50-15 in the rear. These sizes duplicate the original cars' outside diameters. This makes the car look "right"...."
LoBelly