a 208 would bolt up and work if it came off a 700r4. no changes needed.
IMHO going from a 241 to 208 would be stepping down in strenght. the 208 has a 2.61 low and the 241 has a 2.71 low. the 208 case is weaker than the 241 case. i would rather have a 241 over a 208, but thats me