I agree with most of it with the exception of shallow.
here is the dictionary definition of shallow meaning: 1. having only a short distance from the top to the bottom
no not 69 S1 1750 mine or any S2 1750 that ive ran across in the last 40 yrs
Alfaholics is using the term shallow arch
for the late chassis 68-77. See https://www.alfaholics.com/parts/105...ar-wheel-arch/
and have a look at their rear fender offerings discriptions.
I assume they are measuring from the fender line or beltline down to the wheel arch. So Shallow would be a short distance (as in late chassis) and deep would be a greater distance as in the early chassis.
Classic Alfa uses one of the other terms mentioned in this thread. High and low.
Ken Geiger, Toronto
1965 GTA, RHD, Stradale
ex- 1965 GTA, RHD, Corsa, Trans/Am 66-72
1964 Sprint GT, B-Sedan in 70's
1970 Giulia Super (CDN Spec)
1976 1600 GTj (Italian Spec)
1966 Harley Sprint (Aermacchi) 250
2000 Catalina 320, Hull #765 Northern Dream
2001 BMW Z3 3.0i