The Burning Sensation

Anybody know a link to decent cutaway images or a service manual of the FB25? Somehow working on a 53 IH cattle truck and lawn boys hasn't prepped me well for this one.

They are the only spots of leakage. Both pics from below, but minor oil visible above. Upper pic is driver side, lower is passenger, noob mostake in assuming filenames would be shown. Any idea of cost to replace the gaskets at a shop?

File ending in 142 is driver side, 554 is passenger side. Boots are more or less level with exhaust and smell is burnt engine oil to my nose.

Have recently noticed burning smell different than pzev. After a 60 mile trip on interstate noted puffs of smoke on passenger front side. Burnt oil visible on heat shield below. Oil visible along passenger side head gasket and also a little on driver side. Oil down about 8 oz, coolant slightly less. This has the FB25 WITHOUT the head gasket issues, but I can't figure out what else could be the cause. 39,000 miles with no prior mechanical issues. Any thoughts? Thanks, Chuck