57099 is the shorty wix and PF454CL is the ac. I was lookin up some stuff for my Silverado and remembered to look up your deal too.
The man said he ain't dingin his headers, Rich.
I would beat hell out of the header personally, extract a little revenge for all the blood and flesh I've lost to headers over the years.
Bent oil filters is bad juju, some say. I'll run em with a small ding that I don't think goes to the media. Oil filter manufacturers will not warrant a bent filter, nor will an engine manufacturer if their engine's filter gets bent.
Heck, the way we change oil/filters in our cars whether they need it or not, a shorty filter isn't a big deal. My good engines never darken the oil hardly and I change it.
And I'd bet,,,,,if you were to lay open a newer vortec 350 tinker toy filter and a shorty of our older bigger OD style, you'd find the shorty may have close to the same area media. maybe. heck Idunno. But I'll still lay a nickel on it.