I am guessing this is because some people got together and decided that the Ningbo "ready-to-run" distributor is unreliable because of ## claimed failures (1?), thus nobody is allowed to use it?
I bought one for $45 on ebay (Skip White & others). Looks great for the price, but haven't used yet. Pickup looks better than the Mopars (more like GM w/ multiple sense fingers). If you don't like the module they ship with, you could adapt to a GM 8-pin HEI. Re the later, best to use the GM coil and short cable which connects the 2 for easy plug-n-play (85-95 GM V-8 trucks). If scared of junkyards, buy TrailBeast kit.