One of the biggest problems with specialty parts are guys that want the "hot setup" but won't take the time to really think it through or listen when you make a reccomendation - about the value of a part on "his setup".
I don't know how many guys I've had to argue with over the years that wanted to install a particular part because a 'friend' told them it was the way to go -without ever thinking about all the other stuff that goes with it. Sure you can put that Big cam in the engine with stock heads, stock bottom end and cast pistons, yes - it will sound 'wicked', ..... No - I would not suggest putting it in now, then put the 4:1 gears, 4 barrel and manifold and headers on next year. I guess what they say "all money ... ain't good money" is true when building an engine for a guy that won't listen.