It's a great intake for a torque/street application, that's why I thought I would suggest it for a C body. We've had the smallblock version on a 318 for years and years and it ran great.

If you look around, there are lots of dyno comparisons for intakes, and they always include these. If I remember correctly, it always holds up well, except into the 6000 range. but to me that's not a realistic range for a heavy street car anyway. might as well keep midrange and manners