The only reason I didn't bring up the 292 is because of stock class rules. Their wasn't very many cars that came with the 292.And he never said what car he was running. So to me i didn't see enough info. And as for myself running the 250 for so long Is I only paid 150.for the motor back in 84. Long before I knew everything that I do now. And when I did deside to Build a L6 I had a 70s article on a 230 block @460 hp and my 194 stock Block was cracked from freeze plug to freeze plug when I bought the car itself for 150.bucks also. And seeing that It ran so well and for so long I had no reason realy to replace it at the time. But I do have plans for a 292 long down the road

I also Have a turbo and a Blower so who knows what I may do with either Yet at this time.
So if Rules would let you and you can get a 292 some where by All means built it. But on a short track My2cents is I think you'd be happier with the smaller cubes?? for faster RPM climb. hope this helps.}[oooooo]
Ps once you know more Of what you can or can't do with the L6 then we all maybe able to give some better Ideas.