Any thoughts on mufflers for this basic setup.
OEM exhaust manifold, probably go with a 2.25"
pipe, (stock is 1.6").
How far back should the muffler be placed...
right in front of the rear axle, further forward?
Depending on the car, there's usually an indentation in the floor board where the muffler(s) can go and that's usually under the rear seat area and just ahead of the rear axle.
