Mo,,,,,,,the box replace the points as a way to get the current to the coil, not sure what is different between the different boxes, am assuming that it is the speed of operation of internal parts so as to allow longer duration of power to the coil In a message dated 7/19/2009 8:19:14 P.M. Central Daylight Time, micher@xxxxxxxxxxxxxxx writes: Quick lesson for me--just what does the electronic boz do on a mopar electronic distributor? Is that where all the advance comes from and so that is why different boxes?.................Mo.....sw iowa **************An Excellent Credit Score is 750. See Yours in Just 2 Easy Steps! (http://pr.atwola.com/promoclk/100126575x1222585099x1201462822/aol?redir=http://www.freecreditreport.com/pm/default.aspx?sc=668072&hmpgID=62&bcd=Jul yExcfooterNO62) [Non-text portions of this message have been removed] ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! '62 to '65 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html.