What he said. A stock engine should be fine even on long trips. VW Do know what they are doing, it only goes tits up when we start messing with it.
I got the cooler & reckon it will fit just between the torsion housing & rear cross member, it is a bit tight, but will keep the oil lines short.
You can see it is just wedged in place, I will weld up some mounting tabs for it on Monday. I will get the oil lines made up for it too. I will need to wire in the fan to something, not sure the easiest way yet...
The deep sump is on, new 10/40 semi synthetic with new oil filter. You can just see where the cooler will live. It shouldn't get hit by anything either.
I am a bit worried that the van is a bit low, the deep sump is not that far from the ground.
Ignore the puddle of oil, it was windy when I drained the oil & blew everywhere.
Where can you get a smaller top pulley from? You need to be careful as at some point you can get fan stall, ie, the fan spins so fast, no air goes through it.