I have a 65 Chevelle with manual drums, I'm doing the tall spindle conversion in the front with power discs.

Can someone tell me if I need to move the rod and fork from the power booster to the lower hole on the brake pedal, or can the fork stay where it was with the manual setup? I did a search but I got inconclusive if not conflicting results. Thanks!

you will need to use the lower hole, upper hole will be used for mounting the sheetmetal tab that actuates the stop light switch. When you mount the power booster you will see that you have no choice but to use the lower hole for the brake rod.