Which Magnaflow Muffler should I get?

[jggonzalez]

I'm a little confused over which one to get. I want to get a new Magnaflow muffler because my original muffler needs to be replaced and I'm on a budget. My mechanic says he will install whatever I get for $40 (cut off old one, weld on new one). I've looked on here to find out which Magnaflow model I need, but I see several and I'm trying to decide. Below are the ones I've found:

Magnaflow 14858 - Size looks good at 5"x8"x14", but when I looked it up it has a dual inlet, so I don't think that's the right one.

Magnaflow 14828 - 3" inlet and a 4" outlet. I think that's too big.

Magnaflow 11215 - 2.25" inlet/outlet, which looks like the right size, but it has a center inlet and center outlet.

I tried to look under my car (raining, ground muddy) and it looked like I need one with 2.25" inlet/2.25" outlet, 5" x 8" oval, 14" long, with offset inlet and offset outlet.

Based on that, the Magnaflow 14235 seems to fit the bill. Does that sound right?