1989 XJS Air Filter

Mine is a Purolator, which seems to have two slots…one short over the throttle body and one long. I have been shopping and found many different varieties. Some with only one slot, and nothing open over the throttle body, and others fully open.
I would like to know what is the correct air filter for my vehicle.
Tanks in advance.

Hello Rick - don’t know how this happened, but your post, about the air filter, ended up on the “modern S Type, 1999 to 2008”, forum, instead of the “XJS” forum - don’t know how to tell you to transfer the post, so you may have to rewrite it on the “XJS” forum - Tex Terry, II - 1991 XJS V12 Classic Coupe, 1986 XJS V12 Coupe - sent 5/6/2020 0009hrs. EDT USA.