Would something like this work?
MagnaFlow 4in x 9in Oval Dual/Dual Performance Muffler Exhaust 11386 - Straight-Through, 2.5in Inlet/Outlet Diameter, 20in Overall Length, Satin Finish - Classic Deep Exhaust Sound https://www.amazon.com/dp/B000XQJZ34/ref=cm_sw_r_cp_api_glt_fabc_NJRQNF3PRFPRQH4MQ5E3
Sorry I completely missed this comment man. Here is the link to the one i purchased. Just so you know, its not a direct fit. You actually have to cut the resonators off the replica and weld the xpipe in its place. I remember paying around $80 i think for them to cut the resonators and weld the xpipe. I did think about getting different kind of tips down the like but i'm currently trying to sell the car so all the projects for it are on hold. Sorry for the late response, hope i'm not too late. https://www.amazon.com/gp/product/B000XQJZ34/ref=oh_aui_detailpage_o06_s01?ie=UTF8&psc=1
When I had mine built I was going to get a magnaflow x-pipe back to a flow master muffler on each side but the mufflers didn’t fit. I ended up with just the magnaflow x-pipe and I also have custom test pipes welded in.
Here’s a link to the x pipe I used. I did 2.5in all the way through.