Hmmm, I was looking at your pics and it looks like you got enough room but pics are deceiving.
Have you had your Trans & drivshaft in the see exactly how much room you have? I know you set your engine lower so maybe that's why? My suspension is not loaded in the pictures. Once it's loaded the rear end will go up at least 1-1.5" and give me some more room. With loading the suspension & the 3.5" driveshaft I should gain another 3/4" of clearance. For sure how it sits on the stands now I could have got a 3.5" exhaust in there.