hi;
the 2002 rear assy is around 3 1/.2" wider than a std 69 axle. you can install earlier 8.8 axles and brakes that will make it 3" narrower or run rims that have 1 1/2" more backspace than stock.
i have seen a 4 link set up on a 66 but it is a bit of work.
you can also install an after market rear axle kit and watts link set up if you want.
i have no idea why you want the front suspension off a 2002. you can buy total control arms or go struts if you want.
i'm guessing you have access to a 2002.