Why not gear it to run 1600rpm or lower at 75mph? No need to run such high rpm under light load with the Cummins. Never owned or had a desire to own a glow plug diesel.
Yes the Cummins is in a league of it's own.
My 5.4L emits a nice V8 sound at 35-4000rpm while towing our 5th wheel up to speed. 2900rpm with the Cummins is hummin' right along too. 60-70rpm is chugging along. 2k-3k rpm is a blur. Screaming as you say.
Low rpm puts more strain on the lower end of an engine causing faster crank and journal bearing wear. High rpm wears the top end. I like to trade at around 100-150k miles. Some like to pretend they'll keep their diesels forever. Forever usually comes with the next model update.
While towing, my truck is doing the work. I'm sitting in the a/c listening to classic rewind on Sirius while the engine and transmission do their thing with cruise and tow/haul making the decisions about rpm and gear selection. Not a problem. Swinging a 4 lb hammer is work. I have one.
My '03 was an ISBe "quiet" Cummins. You can tune out the clatter but you can't tune out the Cummins humm. I've heard the new ones. I like the sound of the Cummins as well as a V8 gasser under load. Neither is objectionably loud. Why limit yourself. There's more than one flavor to choose from.
