The MP Electronic conversion kit used to be a good deal when it cost $100 (or less), but they jacked the price up so much ($218) that you can get a better quality setup for about the same cost.
The Mopar kit is pretty much a factory electronic setup with a re-curved distrubitor, and the last one I bought (about 10-years ago) had really bad quality (rotor was out of phase), so I have not bought another one since.
The last distrubitor I bought was an Accel Street Billet distrubitor. It is a billet body, magnetic trigger, internal electronics distrubitor with vacuum advance and the advance curve is adjustable. Summit has the small block one for $253. It will be hard to find on summits web page because they have the description wrong.
The Accel part number is #52300. Summit has it priced at $322. I actually have the older 71300E series, but the electronics are the same, the newer 52300 series moved the mechanical advance to the top making it easier to re-curve the distrubitor. I think the 52300 series also comes with the HEI style tower dist cap, but they sell a regular female socket cap if you want it to look more stock.
There are some places that still sell the older #71300E like I have been using, and they are priced a bit less than the 52300 if that matters.
Doing a quick search, I found Northern Autoparts is still selling the 71300E for $260.33. Well worth the extra $40 over the MP unit.
http://www.northernautoparts.com/ProductDetail.cfm?ProductId=480More Info on the Accel distrubitor.
Accel Dist Catalog with info on the 52000 series:
http://www.accel-ignition.com/pdf/DistributorsElectronic.pdfAnyhow, it's just another option.
If your bucks down, there is a neat kit to adapt an HEI module to a stock magnetic distrubitor.
