Exhaust opinions / Mandrel bent 2.5 or 3" / Input?

I have been asking the same ?, And I will be doing a 2 1/4 off the flange
and running it to a single muffler with dual out lets with two 2" down pipes at the bumper.
Not allot of hp, 170/ offey Holley 390 .

I think the 3'' is over kill and takes up to much room.
I am waiting to see a good dual exhaust for a 170/. {low deck}.:clock: