i have a 2001 astra 2.2 sri hatch engine number TAO48562 could someone tell me if that is in the affected range for the timing chain please if so better get it done soon as car does sound like a diesel sometimes at start up so i am worried have priced bits up from my local dealer £155.89 incl vat could be a bit cheaper as theres 3 options listed for the cam cover gasket and they quoted the maximum untill i give them engine number does that price sound fairly good?