340 exhaust system

Alright so I have a 1976 duster with a stock 340 out of a 70 e body. Ceramic coated long tube headers with 3 inch collectors. I’m trying to figure out what I should do for an exhaust system. I want something loud (20 years old) but sounds good with the stock engine. I also have 3 inch exhaust tips that are replicas of the a body factory tips. Any suggestions on mufflers. I was thinking flowmaster super 10s but have heard a lot of people suggesting other brands. Also want an H pipe. Should I get a reducer after the collectors and run a 2.5 and then back to 3inch for the tips or 3 inch all of the way? The engine is probably making like 310-340 horsepower.