[mickmate]

Had to report in here that it's fixed. The clutch and flywheel balancing helped, the fluidamper helped more. It was still there quite distinctly but only under heavy decelleration of the motor or the car. After deciding most of it was coming through the car (steering wheel) and not the drivetrain (shifter handle) the torque side in this case is the drivers motor mount. I previously had an alignment issue with the drivers side pipe which I corrected but it took cutting and realigning the muffler to the collector. I undid the sidepipe mount and it immediately became apparent that was the problem. I have installed fibre washers on all the metal to metal contacts and bolted it loosely through with a nyloc. FIXED! Thanks all for your help and suggestions.