exhaust tips for 70 Duster

I got an email one day from a good Mopar guy here in Howell that has a numbers matching 70 or 71 Duster that is all stock, here sent me a picture that i fail to have still
and his are about 3" past the bottom of the bumper....so i had mine done that way on my 72 duster. i had my springs moved in so i had to run tail pipes in a different location then maybe yours, but there at 3" I think it looks a little long but its your choice.