My shifter tower is a Hurst, but originally from a MOPAR Pistol Grip in a Challenger. I gave the shift lever to a MOPAR friend, drilled it for the bolt on style holes, as it was a push-in style originally, traded for the right shifter rods and arms, and then bought a Hurst P/N 238-8620 Tri-Five bench seat shift lever. Everything except the new lever were used parts. I can now unbolt the shifter lever from the tower and pull the trans with the shifter tower/linkage intact. I just could'nt see having to remove the shifter tower to remove the trans. Butch/56sedandelivery.
I'm pretty sure the 55-57 kit had had a bolt-on bench seat shifter handle back in the 60s-70s. It was much easier to install than the new welded-together setup.
Butch, will you post pictures of yours? I'd like to see how the shifter handle connects to the shifter mechanism.