I have always used CE style connectors as they are easy to install and quite simple.I use TM bars because I like how simple they are and they have the nostalgic look.Sometimes I make them and sometimes I use store bought ones..
I do modify them tho...I cut the front off and put adjustable ends on them..I make a threaded insert for the bar,shrink it in and tig weld it (on stock TM bars)I also toss the front mount and make my own mount.I don't like the single shear stock mount..
Summit sells a nice rod end that is 3/4 NF thread and a 5/8 bore..I cant comment on how well they work as I haven't played with other bars..The cars I build are all street cars..
The 66,67 and 68 all have these bars on them and all have CE frame connectors..
Here is a pic of my front mount with the CE connectors