Andrew, I have a fiberglass W-25 hood on the 72, and I haven't had any problems whatsoever. My very close friend has a W-25 hood on her 86, and it fits, opens, and closes excellent. If you want me to, I can find out where she got it from, or see who the manufacturer is..I tell ya, after seeing her car, I love the looks of the W-25 hood on the newer bodied cutlass' even more...
If you want a look at it, check out the following link...its our MSN group page....

http://groups.msn.com/Olds442andMore/homepage

If you would find out where she bought it. Although I have a feeling its probably a US Bodysource hood as they are the only ones that I know of that make this hood.

BTW, that hood looks great on her car! I think it flows much better than the H/O scoop I have.
Thanks,