I had the 200R4 swapped into my ‘76 RQB-2392 in 2012. I did get the tv cable, shift rods and the shifter plastic shift indicator plate from Nostalgic and gave them to the trans shop that did the work. The swap from the THM400 was pretty trouble free as both transmissions are the same length, no driveshaft adjustment was needed. My engine dropped a little over 1000 rpm’s at 70 mph from the conversion, going from 3000 to 2000 rpm’s.