Ironically, I'm in the middle of attempting something similar with a 3 inch exhaust. I have been planing it more or less for the majority of COVID because Its technically my daily driver and since I'm not driving it daily, now seemed like a good time to take it apart and try to put it back together.

I was hoping to have it done his week but I decided to go over the frame in the very back as well so I need to order a another v-band to complete that final section.
Because my emissions standards are not real particular about after market cats I'm installing it in line with what is actually a huge resonator in place of a muffler. not sure that set-up is going to cut it (I like a rumble but can't stand clacking) so I added a v-band clamp between the cat and resonator in case I want to go with a more traditional muffler. that said, after putting it all together I doubt there is enough room to do a simple swap. I think the hardest part of this to date has been getting the middle hanger right. Fitting a 3 inch pipe over the frame requires NO play and ridged well placed well ballanced hangers.. In fact I think I'm going to add one more for safe measure. I was thinking about doing a full post with everything I used once its all done.
I want to add an additional consideration regarding heat... with the cat being so far down stream, I had the headers and down pipe coated with the goal of reducing engine compartment heat and pushing it further down, I will also wrap the small section over the frame for the same reasons, lastly I fabricated some added heat shielding for the transfer case.
View attachment 2505543View attachment 2505545View attachment 2505546