Shawn,
It all depends on what you want. 250s are great motors and can be modified to run with small cube small blocks. If you want the torque of the 8.1, this is not your motor. If you want something that will turn heads, makes great sounds, and is fun to pick on small V8s with, go for it.
Pick-up a copy of Leo Santucci's Inline Power Manual to see what can be done. There is more to making an inline run than just ordering parts out of catalog. If you really want to learn about building engines and not just throwing parts together, the 250 will be a very good learning tool.
