Just in case you have no purchased your parts yet, here's some links to look over...

47-55 first series parts

Suspension kit I bought (stock height and lowered heights availible)

Front Pin and Shackle kits (both sides)

Rear Pin and Shackle Kit (both sides)

Rear End Conversion Kit

I happened to be ordering during St. Patrick's Day weekend and got 10% off the order and it came out to be cheaper than I could piece together the same parts from a few other vendors.