what is a mid muffler? is that also called a hot dog?

you will definitely need at least a straight through muffler, and even they can be loud and horrible if your not into loud exhausts

the long standing trend is to go 2inch on an a-series, mandrel bent is probably a waste of money for it

mandrel bend is good if you want 3inch but it wont fit, so you put 2.5 mandrel bend to get as much as possible out of a smaller size