yes a dyno would be nice and a killer flow bench i have done a lot of work on heads and intakes and headers and my stuff work very good and holds to gether. not to much math on the flow of a port but just good sense .not tring to brag i do not talke about it to much . my engine i have buit for customer they seam to be happy with what they get.on heads i end up using some dart stuff and some of the gm 861 and the zz 502 heads and world heads and go from there and i go to swap meats and look at head port work. and i knew someone that made heads and look at alot of his stuff and i do not turn down any time to get a hold of a set of heads and get a good look at them .but i work on alot of gm stock heads i spend a lot of time in front of the valve and in the bowl and spend a lot of time on valve seats .we have done harley heads to and had good luck there to .but where i am from not to many guys can afford the nice stuff so i do my best on there stuff . all i can say is a lot of guys get it wrong all they think about is a big cc intake runner and not think at all about headers or ex. big CCheads small hyd cam somtimes flat .not a roller. no CR in a heavy car or truck and top if off with a 900 cfm carb: :whack