Ive got an 85 k20 cab on what "I was told" was a 78 truck when I bought it. Recently, I picked up an all new front clip off of a 76 blazer to swap on. I was wondering if all of this stuff will bolt right on (fenders, radiator support hood, etc.) without major mods. I had someone tell me that the 70's fenders are 2 inches shorter then the 80's ones, so you have to move the radiator support back 2, which is right above the front spring mounts so it won't work... Is this true??