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For vibrations I'd start with gearbox and engine mounts..
I think it's normally the left hand ones which fail..
But while your at it might aswell change all 4..
Just ensure you have the correct motor mounts as gq came with a 2 bolt and 4 bolt mount to chassis..
Smoke.. well that's not good..
The only thing I can think of is clutch..
And electrical well I'll leave that.. my history with electronics is not good lol..