The outlets come out at a slight angle.NICE!
Do both outlets come straight out on the intercooler (can't really tell from the pic)? If so the Dodge Cummins truck guys will buy that from you. My intercooler and radiator are from a UPS Freightliner day cab (FL70?) and is nice and narrow for my M135 and should work great in your truck (measurements are either on my thread or youtube channel).
Is your flywheel housing adapter SAE2 or 3? If you are still shopping for transmisions I suggest the FSO8406 OD same case as my FSO6406, but built for higher torque which will equate to a longer life...well worth the extra $$ and unless its a wrecking yard most guys don't know its worth more.
When looking for an air compressor get it complete with brackets....the brackets have been a trouble for me I should have gotten a single cylinder one instead of a Bendix dual cylinder. Hope this helps.
I'll look for the parts from the FL70 I'm going to a truck wrecking yard friday.
Its a SAE #2 I was thinking about the FSO6406 I'm thinking it should hold up to the 5.9 I'm not going to turn it up to much.
I found a guy on facebook marketplace that had a bendix 550, with a power steering pump on it from a 5.9 only thing I'll have to think about its this bellhousing has a driver side starter so I'll have see if it will fit.