I agree with Tim. The 8010 (and entire 8000 series AC's) were way ahead of their time and beats the old binder hands down in terms of cab, controls, tranny, ect. However, we had an 8010 for several years and can testify that they have got balls at 1700 rpm and up, but are doggy below that engine speed. They have a 300 cu in motor that won't produce the ponies unless the turbo is spun up. The 8030 with the 426 would be a better match to your IH. We traded a JD 4020 for the 8010. They couldn't hardly be more opposite. The 4020 would lug like crazy at low rpm but wouldn't hold at high engine speeds and the 8010 was opposite. Both have their advantages. Have a Genesis now that seems to be the best of both worlds. Good luck, Tom langan