I'm not 100% convinced that stock cam timing can be the optimum for bpu/small singles and big singles alike and also it seems to be the general M.O. regardless of what the cam combo is.
If that is the case we must be very fortunate as it's something else not to spend money on.
I am used to building engines and degreeing the cam with a wheel and dial gauge to the manufacturers recommended settings and then going from there on the rolling road to see what can be found.
Maybe I am being too fussy in this case as no-one in the UK (or at least on here) seems to use their adj cam gears - they buy them, fit them and leave them to look pretty. Some of the yanks claim between 3-14 useable hp gains. Regardless, 14hp for £250 or so is still not great bang for buck anyway I suppose!