I know virtually nothing about exhaust, but I wanted to throw this out so that I could get some feedback.
I am looking for a deeper, burbly sound. More preferential to a drone than rasp and tin.
I looked around a bit, and I am curious if this will further that goal.
Flowmaster Delta 40
High Flow Cat
AEM Cold Air Intake
I know I will need a resonator to dampen loudness, but otherwise my other fits are just stock.
Input?
Personally, I would do a Pacesetter 4-1 Armor Coated header, 2.5" high flow cat, and 2.5" catback with a huge reasonator in 2.5" and a 2.5 in/out muffler of your choice.
Offset inlet, center outlet. I have a Flowmaster 50 series and it's not bad but it's a 3" I/O with a 3.5" tailpipe.
What about the Megan N/A type catback with upper and lower poly mounts?
Flowmaster 60 series is much deeper and way better if you ask me...
40 vs. 50 vs. 60 is all in the ear I would imagine.
40 and 50 have a similar sound output, but the 50 has better interior dampening. I don't know anything about the 60.
2.5" high flow cat Magnaflow and 2.5" offset in/center out Flowmaster Delta 40/50/60 muffler seems like a good bet
The Pacesetter's are definitely not friendly on the budget, and some states make the 4-1 illegal with an after market cat. Depending on where you go, some places may not want to do installation.
I don't think use of a resonator with the 4-cyl models can be emphasized enough... Installing a muffler with less noise-canceling qualities tends to make them sound raspy. Even down-right tinny. A resonator in-line after the cat (18"-22" long is enough) just before the turn at the axle will eliminate it, helping give the system... regardless of what model you choose... that deep, burbly note you're looking for.
BTW: Did the 22" x 2-1/4" (Or was it 2"?) Cherrybomb & 2-1/4" Walker Dynomax on my LN2's S-truck with a 2-1/8" tailpipe (Stock replacement for the 4.3L model) and it sounds great. Far more enjoyable than the whisper-quiet stock system... or the cabin-rattling sound it dumping right after the catalytic-converter.
Go beyond the "bolt-on".