Yeah no donut required. The connection needs to be very straight. The exhaust pipe will actually tend to roll to one side when pitting it up there. IMHO the best and easiest way is to get both nuts started watching closely and give each side a few turns then the other to get it up evenly. Patience sucks but helps with that one.
89 2.5 TBI, 4" RC lift, 1" Booms, SYE, Adams Driveshafts front and rear, Ford 8.8 with 4:88s, BFG 33X12.50X15, and a ton of other stuff.
AF Jeep Club Tail Number 184