Ain't nothin as good as it used to be. That includes most replacement parts for nearly everything.
1) I think I would see if I could find an older electronic conversion kit someone has laying on a shelf someplace.
2) Order the new kit, maybe you will get one of the good ones. When you install that ECU, make sure to ground the case with a wire that leads to the battery. Most failure are a result of a poor ground (self tapping screw through sheet metal) creating too much heat in the box.
3) Dual point distributer?