Also the place that does your machine work on your 283 will be able to get an engine kit for you. They will use a few parts out of the kit for the block and heads and give you the rest to put the engine together. There should be a few offerings in different vender catalogs too.
1959 Apache 3200, Standard Cab, Big Window, Fleetside, 235/3spd, Original Paint
1964 C20 Standard Cab, Fleetside, 283/Power Glide, A/C, Pwr Steering, Pwr Brakes, NoSpin | 
