I've had 4 different sets of headers on my various Mustangs. The BBK 1-5/8" equal length shorty headers were no more of task to change plugs with than any of the other headers. Actually my MAC 1-3/4" equal length long tubes are by far the most work for plug changes... and a MAJOR pain for R&R, but that's the nature of long tube headers.
And as far as R&R of headers, the one piece flange design is the only way to go. I actually welded bar stock between the individual flanges to create a one piece flange on my MAC's. No more leaning on a tube with a pry bar while trying to get a bolt started
MAC = Most Always Crap
