That was my dilemma too, so I bought a older used tractor, no computer or other stuff not need to transform diesel into torque!
As a long distance truck driver, driving new trucks, currently sitting in the sleeper of my 2026 Kenworth semi-truck ... We only keep these trucks 4 years, or 600K miles, whichever comes first ...
Our single most reason for shop time, not counting regular PM's or tire failures ... Is emissions related failures, sometimes we can just reflash, or update the ECU, or replace some sensors, occasionally we have had the complete def tank collapse! We take the DPF out at 300K miles and have Kenworth clean it.
Both the shop foreman, and his top mechanic chose to buy non-emissions tractors, based on the headaches they deal with on a daily basis with our fleet of 450 trucks ...