I was thinking that if it is straight enough to go back together, then it's very unlikely to be that - unless he managed to reverse the GB and injun together in exactly the same plane (pah!)* - so I was wondering if the clutch works properly which hopefully rules out any issue with the input shaft.........................if it was that bent how did he get the engine on it? Or were you thinking something else?
* whilst not impossible, it is highly improbable