hi. first post. and not very v.w. savvy.... i have 2.. 3 ribs transmissions. they are a bit different. i do know they are bus. and "one" is going into a manx clone, that i am doing. what are there ages? what is the difference between them? here is what i have.tranny #1/ ser.no. is 002-301-173. there ia a number 3 stamped above the serial number. tranny#2/ ser no.002-301-103 B. there is a number 4 above it. what does the letter B stand for? the most obvious difference is that # 2 has 2 electical connections coming from it and #1 has only one. i believe that one is for the back up light, what is the second set for...gear ratio's the same? any/all info is appreciated. thanks in advance.. derek