[haris]

Was the 1970 911 was applied gravel guard/noise control over bare metal and then spray painted over it with exterior color? This applies to wheel wells, underbody, engine compartment and trunk.

Should I take the factory coating completely off and start over again? Once I sand blasted, the color has come out exposing a grey rubbery material which could only be stripped off with heat and scrape. Very labor intensive and time consuming besides the fumes! Confused, and need direction here please.