I bought the 3 pc due to ease of installation and no failures with sled pulling/drag racing. My local truck store said the one piece is hard to get lined up.
I was told the 3 pc was stronger by the TC tech , but is it really i dont know, i know it strong enough for what i want to do ( hook to a sled! )
If you find out if H2's fit with a certain size tire or spacer please post, i want to run H2's this winter.
BTW i have seen guys with the TC lift run PYO's with 285's, i think a wider tire might rub.