Also what U-Bolt length/size did you end up going with, what Part #, etc. Who did you buy them from?
What Ubolt flip kit pad is that too?
And are you gonna modify the strike-pad? I ended up getting Baja-Fand's (from Socal Tundras.com) strike pad relocation pad that is 2.75" further up than the stock strikepad. Finally ended up being satisfied with the 4" EVS foam Daystar bumpstop that compresses down to 3". After I ordered like 5 bumpstops to test out.

No negative arch when bumped with the 4" EVS foam one. Its perfect for me. The others put the springs into too much negative arch for me. The 4.5" (which is actually 5") was too stiff/limited uptravel, and was not good for holding 2 quads either. So I'm gonna use the Timbren bumpstops with a 2" long x 4" round steel (Timbren sells this and 1/2" / 1" 4" round rubber extentions/spacers) spacer and run a long bolt through the rubber bumpstop/spacers bolting it onto the strikepad, for that problem. It clears everything and fits fine in there.
Good to see you got the springs/ Ubolt flip kit.