Thinking about a cam swap.

I am running a FMS E303 cam now and am making 402rwhp and 414 rwtq. I cam across a deal that I could buy an Anderson Ford Cam B-21 that would go well with my 1.7rr. Do you guys think it would make a noticable difference in power. Would it be worth it?
 
Eh, I'd look at your IAT's first. If you could give it more boost, I'd do that first. Pulling the cam, a head ( to check Piston to valve), and putting it all back seems like a pain for even a 50 hp gain.
 
yep, inlet temps. You can put a gauge in the manifold to see what's going on. If it's not bad, and you can up the boost and pick up, or methanol if need be. But the tune should be cheaper also since he only needs to add cells for the extra boost rather than changing more, for a new cam. Just a thought.