Not sure about the above question, but +1 on the japanese oil filter. I ordered a box of 10 when I first got my car. They seem like they are high quality. Any toyota dealer can get them if you tell them what you are looking for.
In their part number field, search for 90915-10004A and you'll get the right filter. Just phoned, talked with parts guy there (Ross or Russ?), and he confirmed they have them, reinforced that you use the "A" in the part number, and they won't disappoint you by sending a YZZF1 filter. He even asked, "Are you a Lotus guy?", so he knows why we're seeking them. :nanner:
Also I don't see mention of a bypass valve for the canton filter? Does it have one? or is this one of those "race only parts" that requires careful operation such as idling for 5 min before use. That sort of thing would possible for a race dedicated trailer queen, but not so fun for leaving the shopping mall in Nov (or leaving for AutoX at 5am in late Oct... around here)