I’m looking for something similar and am actually leaning towards magnaflo. Love that it’s modular so I can play around with different setups to get the sound I’m after. I see a lot of guys run muffler on the non-valved side and no muffler on the valved side to get the effect you described.
I drove the auto Supra when putting my deposit down for the manual. While it's quick, it just wasn't for me. The paddles just aren't fun for me. Now that I have my A91-MT, I'm very glad I went with the manual. Absolutely love it.
Mine shipped from the port this past Saturday and arrived at my dealership this morning. Just to give you an idea of how long that part could take. I’m at the dealership right now picking it up.
I didn’t lie to myself about staying stock this time. I have parts being delivered tomorrow and I don’t even have the car yet lol. It should be arriving at the dealership any day now.