i needa cam expert

Don't need to be a cam expert to try and figure out the difference in those two cams provided. They are pretty close in duration/LSA that it won't be a huge change from one to the other is my guess. Lift would be the biggest wild card and even that probably isn't going to be a huge difference. If he has one of those cams and was deciding to change, I doubt the change would make a night and day difference.

Sort of the same thing with an LD340/RPM/Air Gap. if you have one of those it's not usually worth the hassle to swap to another intake in the group.

Personally, I wouldn't call a cam company just for the reasons rumble mentions. Some of the people there are just phone jockeys. Luckily I have a really smart guy locally, Brian, that I can bounce things off of. I'd speak with someone that could get me a cam cut based on whatever the end result were desired or if they suggested a shelf cam, fine.