I believe the 92 All-Trac air flow meters are the best ones to get if youre looking to make power using a stock MAF. This was a known good unit, bought it as a spare for my JDM Celica GT-Four. The item "90-93 Toyota Celica All Trac Mass Air Flow Meter MAF ST185 GT-Four 197100-3850" is in sale since Tuesday, November 13, 2018. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Air Intake & Fuel Delivery\Sensors". The seller is "rhautosports" and is located in Pompano Beach, Florida.This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, Sweden, South Korea, Indonesia, Taiwan, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Bahamas.