257's dont like boost. 207's do. (Given obviously everything in proportion - Air, fuel, tune, ancillaries, etc).
You're always going to limited with the 257, UNLESS you spend big. No one is doubting it cant be done, it just comes down to what numbers do you want, and how deep are your pockets.
And I tend to agree, the rebuilding of an arguably 'weaker' block (205), does seem silly, unless youre looking towards 380-400hp+. But if you were going for more than this, it would most likely lead down the closed deck route, 2.2 - 2.3L etc etc... So the 207 shortblock is the goods sub 400.
The 207's have shown over time, 350+hp ath is quite a reasonable number. Right up to figures seen by Seans GC8...
Brent.
