So my exhuast on my truck is rusted through in many sections, I think up to the manifold. My o2 sensor even snapped off the mounting flange. I managed to temporarily attach it back.

I dont know what the stock pipe width is but what size would I want to replace with? 2' or 2.25'?
And correct me if I am wrong, I want to go from manifold down to new o2 sensor, then I can put a glasspack in and tail pipe?
Does the pipe come preformed to my truck or do I have to angle myself?
Any other suggestions?

Thank you in advance!

 

LCE has a plug and play exahust manifold but its very expensive, pasesetter makes a cheaper one but its not know for lasting too long. 2'' or 2 1/4' are both good, I used 2 1/4 on my truck and it seems to have plenty of power. You will have to run the exhaust pipe your self it is not pre-shaped but the only bends it has is going over the axle then out behind the rear tire. I personally prefer the sound of magnflows mufflers and they are affordable and stainless steel so they last.