Any problems putting 3’ exhaust on 70 Dart ?

I’ll probably go with the 3’s for bragging rights. Mufflers are ultraflow’s no offset straight thru which I was told that there could be kind of quiet at cruise but will definitely sound off at WOT.
Anybody here agree/disagree with that ??

No need to get straight throughs with Ultra Flows. You can see straight through their offset mufflers. The inlet and outlet position has zero effect on their baffling system, unlike conventional mufflers. Their offset mufflers are just as "straight through" as their "straight throughs".