Rear Drop.....Adjustable trac bar?

[Leverhead]

Just finished a 3" front drop (cpp 2" modular/1" springs) and moving on to 4" drop in back (4" springs, shock relocators, trac bar?). For those who have done the same, can you remember how much difference there was from the original trac bar length before your drop, to the 'after' drop length. Looking at CPP adj trac bars (the std length ones that install in the factory holes/brackets) ...they have 2....one is 27" long (63,64) ,& the other is 24"(65-72). The OEM one in my truck now ('64) is 23 1/4"...it looks like it was cut and re-welded. Also, how was the angle of your trac bar after you installed it on your dropped truck? Any problems with the ride afterwards? Trying to get this right the first time. Thanks.