Another alternative is the CPP kit which Mid Fifty sells also. I installed mine in about 6 hours including 2 trips to the auto parts store for PS belts. Link on my website with photos of the install. About 500 miles on it and love it, best upgrade ever regardless of route is PS.
1953 Ford F100, 2000 Expedition, 2008 Silverado 1500 Crew Cab, 1931 Model AV8 Roadster (Build in Progress)
Check out my progress at www.vassh.com