Joel,
If the body plant dip-primed the body, the whole thing would start out with the same primer, then a semi-gloss black was sprayed on the firewall down to the pinch weld with some overspray below it (no masking at the bottom, only at the top).
If the body plant sprayed the primer, then it was probably sprayed over most of the lower firewall but not necessarily all of it, since the black applied later was also a primer. The firewall black was sprayed after the car was painted and baked. After that was all done, there was also a thick sound deadner sprayed under the trans tunnel, with plenty of overspray toward the front and sides of the tunnel.
Verne
