Best I picked up was 18bhp@wheels, on a 1760 x flow, the muppets that "set it up" just put the timing to std at idle then didn't touch it after that, and said it doesn't matter that much, after I did my way I went back and told them put back on the same rollers and it showed the increase.
These guys are still in business, and said it wasn't modded enough to need a different curve, I only had big valve fully ported head, high CR pistons, twin 40's, and fast road cam.
tabetha