Hi all i am new to audis and have a 1991 audi 80 sport and wish to swap the engine for a 5 cylinder 20 valve unit. I have a complete 91 coupe as a donor car but it is an auto and i wish to keep the manual gearbox, will this engine bolt straight up to my gearbox and can i use my existing flywheel instead of the torque converter? or would i have to use a 20 valve flywheel?. Any advice or tips and hints are much appreciated and i am sure would save time. Many thanks Monkeystella.