http://www.manciniracing.com/mara13aircld.html

Thanks to all who helped. I finally got the Mancini 13" drop base and it worked perfectly. It clears the stock metal fuel line, the eddy electric choke, the coil, and the linkage! Just snipped 3/4" off of the stud bolt and good to go. Seems like I have plenty of head clearance for the carb.