dude even compared to the old straight 6s and v8s, the v6s arent THAT complicated. the only thing i can think of is the addition of vac hoses and turbo hoses, BUT you could find the same thing on a turbo'd v8 or 4 cylinder from the early 80s...oh yeah,
SMOG stuff is the extra stuff, BUT working on a smog era v8 would've helped you find out which part is which...as the buick v6s are basically the same thing as the v8s before the smog era....with some differnces and addition of emissions control thigns, which complicated everything in that era IMO. have y worked on a mid 70s Ford or Chrysler with the cali smog equipment all added on? honestly....just because youve worked on farm truck 6s or 60s v8s or smog-delete v8s doesnt make the v6 anything more complicated; you just gotta learn and study....grab a version of the book i have, Chilton AUto Repair manual, 1978-1985 for 1985, PN 7470 US and Canadian models, it WILL help ALOT. (i've one for the ciera, but it includes all the RWD platforms) its got helpful sections on emissions controls, turbochargers, placement of things not usually found in Haynes, torque specficiations, lots of info for the engines, actually, it will be very useful for you as a reference for the v6s as in which car had what engine options, and ID'ing which engine is which....and then theres the huge section on the variety of carburetors used by all the companies; VERY useful info!
knowing is half the battle man......rebuilding an engine takes time yes, but knowing what you need will save some time
simplest thing, look at the v6 as a smaller version of a v8, with all the emissions stuff OFF the thing. then put it piece by piece and most of the emissions controls i know of, the AIR injection pump, the Charcoal EFE or EECS system, and sensors are the add ons for some engines...which can be removed and wont hurt the engine, but will hurt the emissions check >.>