Yes it will with no problems.
Yes, it is the same bolt pattern.
A 350 Oldsmobile engine has a different bolt pattern than the Chevrolet engine. The 350 Olds and 350 Pontiac engines have the same bolt pattern. The 350 Chevrolet and the 350 Buick engines have the same bolt pattern. Unless you have a dual bolt pattern transmission (there are some out there) in that Chevy, the Olds engine won't bolt into the Chevy transmission.
yes the Chevy in line 6 cylinder and the 350 share the same bolt pattern from 1963 and up.
All 350's will bolt up to a 2004r if it has the Chevy bolt pattern.
Yes,
yes
No turbo 350's in 1992.
There is no need for a adapter plate, The 350 trans. bolt pattern is the same as a 400 trans bolt pattern. All Chevy transmission are interchangeable up to the year 2000
All chevy 350 engines use the same bolt pattern to bolt the bell housing to the block so the 71 model block should bolt up the same although there may be slight differences otherwise.
Yes it will.
Yes, as long as the transmission has the Chevy bolt pattern.
Chevy, Buick and Cadillac shared the same bolt pattern as did Oldsmobile and Pontiac but, some transmissions had two bolt patterns to fit all GM blocks. If your Chevy Turbo 350 transmission has the dual pattern it will fit the Oldsmobile engine, if not it won't fit.