Ok, in my hotrod mag it says..."Flowmaster's hot new 3-inch exhaust system for GM A-body's can deliver gains up to 50 horsepower on performance-modified big & small block equipped vehicles."

Ok to me, 50hp for just new exhaust is just too much. I am thinking that they have like a 1 inch exhaust on like a 502...

Anyone think im wrong?

50 horsepower over the stock muffler and stock single exhaust. Thats the only way it could be true.