Had a look at the exhaust the pipe coming off the extractors is larger than the next piece, about 2inch. When my uncle sold it too me he had removed the aftermarket muffler that was on the car as it was illegal ,ie spat flames when backing off in 3rd on freeway and was way too loud. It made the car run like shit anyway. Was like a twin 3inch outlet anyway. The muffler and rear pipe are now smaller as went back to stock.
I don't mind the noise just worried in case anything was wrong that all.