As far as the carbs go, most likely choices for a 4 barrel on a 292 are the Holley 390 cfm 4160/#8007 or the Carter AFB 500 cfm or its E/brok clone. I ran the Holley for years on an Offy intake. Good set up. I like the AFBs because they are easy to rebuild and tune.
Since I run a pickup truck in the desert, I prefer the stock 292 oilpan due to its depth and volume. (6 quarts incl 51061 oil filter). 292s like a LOT of oil to keep clean and cool. Novas, I hear, have a unique oilpan shape, so I can't advise about either internal or subchassis clearances.
I bet Larry "Twisted 6" could answer that one.
I/I #4101
'71 GMC Jimmy 350, sm465, np205,3.73 posi.
'68 C/10 Stepside 292 (.030 over) Offy Intake, 500 CFM AFB,Clif headers, sm465, 3.73 posi.
'67 K/10 454 project.
'72 K/5 rolling frame project.
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