Ah, yes. SuperGlide-Shoulder.I'm 6', also. I only needed to move the bar back towards me - no change to angles or width - so I went with the OFFSET risers.

PLUS: simple install, wires/cable/brake line unchanged, keeps same gauge angle, hides steering bolt, easy access to fork top plugs.
MINUS: must remove handlebar to alter 'fall away', extra hardware needed.

HOW TO: Have your dealer bring up the front end diagram of a 1988 FXRT. You need:
--- 1 set of offset risers
--- 2 x riser bolts
--- 2 x acorn nuts for new riser bolts
--- 4 x acorn nuts for orig clamp bolts

You need the nuts because the risers are NOT threaded; I like to use acorns. See how my bar doesn't line up with the forks? Works for me, tho.

 

I like the risers, they look good to me, they make the bike more comfortable to me as I don't have to lean over. I recommend. I got mine from Zanotti's as Drag Specialties # DS-290125. The only tip I have is that you'll have to do something with your brake line. I initially just bent the hard line on mine, but the line was stretched pretty tight. Iended up replacing it with a braided line. One more thing if you get the same risers I did, the threaded holes in the risers are blind (not through) holes and the stock socket head screws will be a little too long. I just cut about 1/8" off mine.