1997 Chevy P32 parking brake cable. Southwind Storm is

[Sparksvonrou]

We need to find the correct parking brake cable (from the foot pedal to the linkage). I've pulled the shaft brake drum to check the shoes and found out that the cable coming through the firewall from the parking brake foot pedal is bad. The cable from the linkage to the brake shoes is ok. This does not have the hand operated lever but the foot operated one. 19.5 inch wheels. It'd be wonderful if a local supplier has one.

[enblethen]

Yes, type of rear brakes determine type of parking brake.
In the link shows different styles.
The first one in the link, BC95016, is probably the one you need if you have discs on the rear.
Look at this link for BC95034
1997 Oreilly listing.

[Sparksvonrou]

Hello. This is the Autobrake on the propshaft. Not rear brakes.

[enblethen]

Here is numerous listings for cable at O'Reilly's
Need to check your length and description of braking system IE disks or drums on rear. List is for my year!