I replaced my original 235 with a 283 V-8. I liked the six better and it would take me down the road just as well as the 8 would, maybe not quite as fast, but would run comfortable at 55-60.
The 261 I now have in it also runs comfortably at 55-60, but sure doesn't do as well on gas. But if you can get traction, you can pull it.
