I also have the trailerblocks on my toy hauler but I would recommend getting the top tie plates elsewhere as the ones they use are for 2" wide springs and they use them for 1.75" springs also which when tightened down they will bend. U-bolts are ok as they upgrade to larger size/diameter. If you go this way and need a place to get U-bolts and top tie plates you can PM me and I'll get you the link. I purchased complete set from them, then when tie plates bent I scraped the U-bolts and tie plates and sourced them elsewhere with great results.
