I wouldn't bother asking for a cam swap. I would just go with the engine sweetk30 purchased( a damn nice engine) and deal with the electric pump.
I had BP send me the dyno numbers of BP3503CT1 vs the 383 BP38313ct1. They run pretty close. I like the easy drop in and cost. Reman never bothered me on driver/work vehicles.
I'm still weighing my options as well, but this 350 is on my mind.
Like said, it's all really a crap shoot... that's why they give warranties. BP Dynos and that's a nice extra. Once one of us gets one of these, then we can better eval the BS meter! BP seems pretty proud of the 3503CT1 for the Cost or power!
j