I wander if my K-Member sits forward more than yours from the firewall? Which would explain the measurement from firewall being different.
I am currently speaking with Denny about the full kit. In going over my parts list this morning, I have about $5k in parts. I wander if I could sell a Complete 1973 thru 76 package of all NEW HDK items with exception of the complete Knuckle setup (which have been restored), a V8 center link, and a rebuilt power steering box. And get somewhere close to the needed $5k. Only thing I dont have is single pistoin Calipers. But I do have new Premium Napa big bolt pattern Rotors.
Parts as shown in prior pictures back several pages.