That Laser did a Targa Tasmania with a heap of Sierra tweaks aboard (about 300 hp's worth IIRC)... quick as stink! In the 92 12-hr, it evidently got a big gutful of fresh air at the top of the hill, the impeller flexed and jammed against the side of the housing... and tore the impeller shaft straight out of the guts.
Dick also drove Joe Moore's King George Tavern XD following the Rock (I had thought it was at Surfers), with 17 on the door and Dicks gun motor aboard: the radiator cap played up and the thing overheated, but he had led the rae for a while.