This subj has been hashed and rehashed on this site and there is no good alternative larger filter. I found one at Baldwin though but am not sure I want to try it. The FL820s at Baldwin is a B329. The alternative I found is B281, which is the same gasket, thread, and diameter, but 1.5 inches longer. The B281 has an antidrainback valve also, but if you cross ref it to a Wix, the Wix version appears to NOT have an antidrainback valve. Confusing, especially if you die (dry humor here) and wife has someone else change her oil and they simply get the Wix replacement of what is on the car.
Anyway, for what it's worth.
Anyway, for what it's worth.