Four barrel intake, a header, and a decent exhaust system are good starting points.

A cam swap is doable if you want to dig into it, but beware these engines have low compression so too large a cam will sound good and not do much else.

Torque converter upgrade

Rear gear ratio upgrade.

Also, if you drive it in D they make tail shaft governor kits that raise the WOT shift points so that might help when you put your foot in it. I would think those cars would have the part throttle kick down too.