New question about exhaust

Hi i am new to this forum or any forum at all and would like some feedback on how to improve performance on my new honda civic 96 dx. I have made alot of interior mods fully redoing the sound system head unit tint alot of the cosmetics of the car. I do not know alot about cars but I dont have alot of money and the money i do get is going right into the car. right now i am getting a universal muffler by ractive. Is this compatible with my car? and if so will it give me a good sound or an annoying raspy one it has a 4.5 inch tip with 2.5 inch in the front after this i plan on redoing the whole system when i have enough money. Will this improve sound performance?