Grabbed a set of 37" Baja T/As on 12 bolt H1s for $150 to throw on my Jeep once my 39s are on my buggy. No inserts though.
I know there is a lot of H1 knowledge in this crowd from ~10 years ago...
What were people using for inserts? What size PVC? Where did you get it? What modifications, if any, did the PVC need to work correctly? Is the width cut anything more than measuring the assembled wheel and subtracting both bead thicknesses?
There is a $100 set of stock rubber runflats locally I am tempted to grab but am reading not all tire and wheel combos are interchangeable.