Should it stay or should it go?

You'll also need a driver's side exhaust manifold for the LA engine. The pax side will be fine as is. You can get headers for an early a-body, but I hear it's pricey and a tough install.

Dual exhaust are problematic for early A's as the tranny crossmember is only notched on the driver's side. A 318 with a mild cam and the Commando (single) exhaust makes nice sounds.