You might gain a few horsepower and save a couple of bucks, but at the cost of dumping some extra carbon into the air. And you would be at risk on the safety inspections, since a cat is a safety item on post-1977 cars.

I also think that VA is going to get tougher on older cars given the worsening air quality situation and general tend toward going green. They have closed the loophole on antique plates and may follow California's lead on older cars.

So my advice/opinion is to go with the cat version.

__________________
Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe