per the latest registry, 5R103 "never raced again" following being stuffed into a sand bank 1969 12 hrs of Sebring.
found a photo from 1970 Daytona, and according to Racingsportscars.com;
#94 Cummings / Stumes Shelby GT350 Susan T. Cummings 327 laps DNF
I'm adding this to my race history table
regards
jim p
Looks like a '67 Shelby in the background.
- Phillip