Great cars..

But parts are WAY more expensive than on your old SD. You need a detailed inspection and what's been done (records). Besides what is mentioned, that engine is due for a timing chain and guides. Probably never had oil tubes replaced either. That's a few grand if it hasn't been done.
Leaky PS pump is 6 hrs to remove and replace- so a expensive job. Fan clutch is about $600 ... Many steering/suspension/driveline parts are specific for M119 engine and can easily cost 3-4X more than the M103/104.

That said- love our 94 model

M