I pulled a Hydroboost unit and pedal assembly off a Chevy Express van in the U-pull yard. I also got a pedal assembly from a Jeep TJ. The Jeep and GM van use the same mounting bolt pattern. The only problem is the Jeep and van use different pedal locations and pushrod lengths. The folks at WFO concepts have a firewall spacer that solves that. I might have $50 invested so far in the conversion on my 54. If you go the U-pull route, make sure you get all the hydraulic lines you can, I made the mistake of not doing that.
