The last 2 MH's I had even tho on Chevy 3500 the rear still slammed over cracks/pot holes.
Once I installed the Bilstein's both front AND rear,
I didn't have the slam in the rear like I did before installing them and the front didn't dive any more like it did.
I know I have talked with a few and even at least one on here who put the Bilstein's on his Ford E350 chassis MH and loved the ride, no more slam over cracks/pot holes, no more dive in the front end.
To me these Koni's feel like plain old style shocks, then kicks in on the cracks/potholes , at least on the rear!
Yes I noticed a difference in the rear , NO I didn't notice one bit of difference in the front cracks/potholes and especially dips.
So my advise would be to replace both front and rear with Bilstein's .. If you want to spend the extra put the Koni's $$$$ on the rear and Bilstein's $$ on the front.
For me lesson learned , should have went with my gut instinct/feeling and stayed with Bilstein's ..