a 230@.05 camshaft on a 505 stroker certainly does leave something on the table as far as HP and Torque. So if peak HP and Tq is all someone is concerned about, by all means change the cam.
A more realistic way in my mind is to look at the area under the curve and consider how the car will be used and what is the realistic expectation for performance as well as drivability. That combo will make a very reliable street combo that will absolutely roast the tires any time you want to. No, it's not a high rpm screamer and I suspect from your post that, that's not what it was intended to be.
Personally I probably would've spec'd something slightly different, but I bet the owner has a lot of fun with it just the way it is.