Driven about 10,000km in it so far, and it is great. So much quieter and easier to change gears. The gear ratios are totally different, so that took a bit of getting used to, 7th is the same as 8th gear on the old one. The only time I miss the Claas overdrive in on the steep hill in twisty mountains, where the half gear would be useful. I find I can drive at 40-45kph but I can't get into 6th gear as the rev drop too, and I'm not at max boost (2200rpm/20PSI) as that's down to 1600rpm in 6th ( I lose 3-4kph in the time it takes to change from 5 to 6th. This mean I have to sit in 5th gear at 40kph a lot more than I used to before, no big deal for me as I am not in a hurry, but it occasionally means I end up with a few cars behind me. With the old gearbox and the Claas, I could be half a gear ahead and doing around 50kph. This is also because of my little turbo, which probably restricts things so I don't really like to rev past 2500rpm. I'll eventually get it onto a dyno, and see how it performs over the rev range, and then see what alternative I can get, maybe go a bit bigger on the exhaust side - from the GT2860RS to a GT2868, or a GTX3071. As you can tell from the gearing, I need more power/ torque at 1600rpm, which means more boost as at the moment I'm getting around 12-13PSI, and the EGTs climb over 620C ( before turbo) when the boost is less than 17-18PSI. The turbo is making 0.5PSI at idle

I just need to do the science in this, there are loads of options, and more opinions on this than there are options
I see loads of truck with big turbos making with 25+ PSI boost, but that;s over 2500rpm, if the same turbo made 20PSI at 1600rpm, them I'm in, but I've never seen any real world tests that show that happening. I also need a watercooled / ball bearing turbo, as I have the small oil pump and squirters, to if I went to a standard oil cooled one, I'd have to upgrade the oilpump as well, and that would be a pain in the backside.