How do I work out exactly what model I have as it came from singapore I know its an 850 Turbo but thats it

You can either check through your VIN, which is located along the inner fender (facing the engine) on a metallic plate, or look at the sticker on the timing-belt housing cover, or as a last resort, look at the engine-block, just around the back of the engine-block, near the 2-inch rubber hose that connects the cooling lines (btw, good luck in seeing that! I was only able to see that when the engine is down on the ground, removed from the engine bay).

Cheers.