correct, the 216 and 235 bellhousing will NOT fit a 292.
there are two different bellhousing openings...
the sm420 diameter centering collar is smaller than say an sm465 or T5 centering collar. so you will have to locate the approprate size for your needs. and yes the more modern bellhousings will fit any L6 and any V8 bolt pattern. therefore any modern automatic tranny will fit any L6 or V8. the bolt pattern of all the modern trannys is the same to the bellhousing.
if you run a T5 w/ a 292 you do not need to cut the centering collar tube as you would on a 235 application.
sorry the foot start has to go but i left the foot bolted in situ just cause.

rather than answer all your questions
do a search on the topics you ask about, they have more than likely been asked b4
when you get to the point you need to fit items in the engine compartment you'll know to ask
like
http://www.stovebolt.com/bboard/cgi-bin//ultimatebb.cgi?ubb=get_topic;f=2;t=011073#000000

Jim & Caroline
The highway is for gamblers, better use your good sense."
Gooday-that's my 1¢ answer due to the lousy economy ~ cause I ain't got - no . mo . doe
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