LT's, OFY, and stock catback
 

i was wondering about using this combo to keep it quiet when the cuout is closed, but some told me it would be louder than if i had an aftermarket catback...so my question is will it be qieter to keep the stock catback and have the cutout closed, or will it be quieter to get an aftermarket catback. i plan to get a f13 114lsa cam in the future

Just get an aftermarket catback. If you plan on a cam, the stock catback will become a bottleneck.