Well, I'd be very suspicious of that cam.....
80+37+180 = 297, not 357 degrees.
Advertised duration numbers without the measuring point are meaningless.
You don't even have enough info to degree the cam so you'd need to check all the various points and figure it out or stick it in a cam doctor type measuring device and get a print out.
And a 237 @ 050 cam is way big for a 3.8 and too big for a 3582.
The buick's will run a 215/215 in a 3.8 with a 67-70mm turbo IIRC or bigger turbo.
Check the buick boards, but I'd say you want something smaller from someone that knows how to fill out a cam card....
99 Camaro v6 - working on LS3 swap
71 Nova project- turbo 6.0