Yeah, you dont want a cannon mate. Cannon exhausts are sorta been there done that, and you get over the whole loud note it produces and the drone at lower rpms/idle just isnt worth it. Try an exhaust shop to do a custom muffler axelback, still quite silent with a nice burble and only roars when you punch it. Might be the cheapest alternative atm. A few of us have got TRD muffler axelback, subtle, quiet until you give it some. Be prepared for some pain in your wallet though. Others have done custom mufflers, XForce Twinloop S10 and Varex Mufflers. Try sourcing the muffler yourself, Ebay/exhaust shops/Importing and get a shop to just install it for you. Dont go cheap supercheap auto/autobarn gear and expect the best quality. You can try whatever you want, end of the day its your car, catback can be quite loud and attention grabbing, unless thats what you want. See how you go.