'67 SS OE Prop valve location for Manual Disc Brakes

Hi All. Long story short.....I have a disc brake conversion kit in my "67 BBC. 9" booster with the valve mounted just under the m/c. The 9" booster sucks and is not getting the job done. I can't go to an 11" so I am going to manul brakes.

I want to get the pre bent lines but I believe they assume the prop valve is in the stock location for a 67 SS with manual disc brakes. I don’t know exactly where that is!

Can someone post a picture of where I would need to relocate the prop valve [on a stock '67 SS] so I can use the pre bent lines sold by OPG or similar place.

Thank you!

Here is where it is located now...