Originally Posted by
lexusbest
Does anyone know if old laydown top shaft fits into the new gearbox?
It does. It will work as is, but ideally, you'd have a 1mm shim between the shaft and inside of the drive side bearing. If you're doing a conversion, Pay close attention to screw lengths, 6 of them are 10mm, shorter than the B6's. Use the longer ones and it'll damage the inside of the case and potentially lock up the gearbox at the idler gear.