Hey all!

I have a '61 Apache that I planned on putting a 250 until I found a great deal on a 292 (I now have both engine available). I just found a great deal on a complete turbo set up for a Chevy straight 6. Which would you use and why? I plan on backing it up with a NV3500 5spd, keeping the 3.90 rear end. Street fun is the end goal.
The remaining engine will be used in a future rat rod project.