by Monza Harry » Thu Mar 24, 2016 9:21 am
I could be wrong but the THM 250 is the same transmission as the THM 350 with fewer clutches [etc.] the THM 200 is a different transmission but I recall mine having a Modulator [that was back in 1986+/-] the H-Bodies apparently were equipped with all of these transmissions. My conversion was in a n X-body and I don't recall any strife or drama so I would think that this should be straight forward swap for you, excepting the possible irritation of speedo' gears. Harry
https://en.wikipedia.org/wiki/Turbo-Hydramatic
I'm not a hoarder I'm a preservationist 78 Monza Spyder (~Soon(ish +/- I guess) To Be 2+2 with Spoilers)