I went with new Pacer wheels. Here are the specs.
Go to
http://www.pacerwheels.com Select RWD and you will see the wheel that is on my truck. Click on it and it will give the detail below and more.
Pacer part number is 161M-6781
Wheel size is 16X7
Bolt circle is 8X6.5
Backspacing is 3.62 inches
The most important thing is the backspacing. Most newer wheels are designed to fit over discs and have a deep dish. These old trucks require a shallow back spacing to avoid hitting the idler arm in front. The back wheels could be different I suppose. You would just have to try. If you don't want new wheels just look for some with a shallow back space measurement.
Bill