[blubomber]

Your new Cat is similar to a Bonneville although the Bonneville has a 3"
longer wheelbase and is longer in the back quarters. From the front doors forward you have lots of inter-changable parts as well as for the interior. Mechanically and electrically they will be identical and you can install options from one onto the other. Everything is in place for you to make the std Catalina single exhaust into a dual exhaust. Yo can even install long branch exhaust manifolds and really wake up the motor. A 4 bbl carb/intake and the long branch / dual exhaust is an inexpensive way to get a lot more performance. The base 400 motor has plenty of power. Good luck. Always liked the fastbacks!!