Should I change my cam?!

Actually I find more difference on the street than in brackets.
We spent a lot of time both dyno and road on combinations for the 440 motorhome
There is a reason that Nascar limited to ford size lifters- no one ran chevy lifters
check the Hughes website
also comp has a comparison of their XE and XE-HL cams
definitely you can feel the difference at the same seat timing
In a heads up class the .904 or a mushroom cam will win