I have a 82 280zx that started out as a na but I switched it to turbo. Now it is running a factory turbo, megasquirt, supra 440cc injectors, msd ignition control, aftermarket fpr, aftermarket fuel rail, j-pipe, and some other odds and ins. But I was wondering if someone could help me with what muffler and cat to buy for my exahust. Once tuned the car should have aroung 250 hp and I would like to have it tuned with the exhaust already on there. So is there any advice? Sorry if this is in th wrong spot or anything. Thanks ahead of time.