Does anyone know where I can find a parts catalog for an '86 Cutlass?  

paddock may have some stuff #1800-428-4319    also try year one or original parts group. if your not looking for some off the wall stuff your local parts house may supprise you and be able to order most parts just make sure you get some one who knows their job  good luck and keep us posted

Check out Poston Buick and TA Performance. Like the other guy told ya, local parts stores could be ok I guess, depends on what your looking for. The best source for parts that I picked from was Monte Carlo SS's in the junk yards! And dont forget the other G bodies, Oldsmobiles had some nice high back bucket seats in some of their Cutlass. My guess is it might be difficult to find buckets from a TType, or GN.

Yearone has catalogs for both Buick and Oldsmobile G bodies (your post says Olds...but the title says Buick...but whichever it is...you'll find it at Yearone...but be warned, their prices tend to be high).