I'd be disappoint with the 410 results, say I had a similar 367 in my car now and was asking what to do next top end like Trick Flow or stroker and was talked into stroker and only got those gains, I'd be pissed with the advice. A decent built 360 can make 450-465 lbs-ft, 480 lbs-ft from a 410 ain't very exciting :)
I would be disappointed if I spent the money on the 367 they built instead of the 410 they built. Just like they were disappointed when they saw the difference in power for the money spent.