67 K10 drivetrain options

[67dummy]

Looking for help/ideas on drivetrain options for 67 K10 that was originally a six stick on column 1/2 ton 4x4.I have a 1970 style LT-1 350 motor and looking for input on what to use for engine crossmember, transfer case and transmission? Keep it as originally equipped to keep it simple or are there any better options? I prefer to keep it manual shift,any overdrive options?Power steering and power brake ideas? Also looking for clean straight rust free pass.fender,fleetside tailgate,front and rear bumpers with brackets,drivers side short bedside.thanks