TOO BE HONEST IM NOT 100% SURE BUT I WOULD GO WITH JIMWOLF BACK IN 93 JIMWOLF WAS ONE OFTHE LEEDING ECU UPGRADE MAKER AND IF YOU REALLY WANT TO KNOW FOR SURE CALL JIMWOLF AND SET UP A WAY TO SEND IT TO THEM AND THEY CAN TELL YOU OR GIVE YOU INFORMATION ABOUT THE NUMBER ALSO Z-1 AND BOOST SOLUTIONS SELL ECU UPRADES