67 Valiant drum to disc conversion questions

I was just hinking about how nice it would be to have the money to just buy one of them 'bolt-on' tubular-rack-n-pinion k-members with all the bells and whistles...but we all know they are stupid expensive. I never understood how a guy could spend 4 grand on something like that...and I just figured it out. Its not the price of the parts, its the savings of the mental anguish and possible psychotic episodes involved in some parts of junkyard builds.