Is it smart to drive with a couple of bad mufflers on my '83 tqc? i have heard that with the turbo, it can really do some damage to the engine if you don't have the mufflers in good shape. as it is now, i have holes in both of them on mine. good or not? i ask because i don't have the $500 i need to get the stebro exhaust that i want. thanks in advance nvw