TH400/NP205 ????\'s I was wondering the difference between the late 70's 400/205 setup and the late 80's 400/205 combo. Are they the same except the crossmember. Can I put a late 80's combo in my 73 K5 with minor mods. Are the output shafts and adapters the same. Can a late 80's 205 go on a late 70's 400? Thanks for your help.