Well prepped C2ae rods or Aftermarket replacement rods. Good valve springs, tubular pushrods and a good balance job would be your basics to make the engine reliable.
To make power at 6000 rpm or so you would need some head porting,or alum. heads , 228-234 @.050 duration. .500 lift is nice. 600-650 cfm carburetor. Highly modded stock "B" manifold or aftermarket alum., and set of good headers and exhaust.
A well built 6000 rpm 292 should make 310-370hp depending on part choice at a streetable compression.
We just built a .060" over 292 matching these specs with aluminum heads and manifold, 1" dual oval spacer and our 55' F100 EMC tri y headers made 365hp and 370lbs tq.
20 miles east of San Diego, 20 miles north of Mexico