The "KT" molds are no longer made. The mold rcbs sells now is a different animal.
The kt molds have a larger bottom drive band/bullet base and a shorter/smaller top drive band.
The new rcbs 201gr molds have an equal bottom and top drive band.
RCBS 2-Cavity Bullet Mold 45-201-SWC 45 Cal (452 Diameter) 201 Grain
Which is interesting because Keith went to h&g because he didn't like that lyman changed swc designs that had equal drive bands.
The h&g #68 and it's clones was designed to mirror the shape of the ball ammo/bullet of the 45acp. The end result is a bullets that feeds extremely well. Most reloaders use 1.250" for a oal for any of the h&g #68 bullets/clones.