The consensus on this board is that Fram filters s*ck! Here is an informative thread on the subject of oil filters. :Smarty: Oil Filter Study
I like the purolator's. Never heard anything bad about them. Frams are junk, open up a new one and compare it to any name brand one for yourself.
Use an AC filter...also, regarding your carburetor thread...I have an Edelbrock 600 on mine which runs OK, but I still have an off-idle stumble which I can't seem to tune out...and I've thrown a lot of changes at it, ignition and otherwise.