1st hand tips please

I know the exhaust section may be more fitting, but the traffic is very heavy here, so....
I ordered and received the 2.5" header back dual exhaust kit from Jegs, with the welded turbo mufflers ( $ 257.00 kit). If you have first hand experience at installing this kit, anything I should be aware?? such as bad fitment, or a small trick that worked for you?? thanks in advance.