I don't know how many locations were used in the film but this vintage piece in the San Luis Obispo Tribune pinpoints one possible action sequence: You will need to copy and paste the link.
www.sanluisobispo.com/news/local/news-columns-blogs/photos-from-the-vault/article39455520.html
If you bring up Google Maps Satellite View and follow Higuera Street south out of the city until it intersects Octagon Way you can see the Octagon barn which has been preserved. The PCRY generally followed Higuera street in this area.
You have piqued my interest and I will try to find other possible locations over the weekend.
Cheers,
Jack
Edited 3 time(s). Last edit at 07/20/2017 11:17PM by Jack Neville.