Lift kit Identification

[Ezgeaux]

I’ve had this cart for about 6 months and recently replaced the rear springs with dual action leafs. I noticed the rear lift seemed odd. It’s not really a block, but rather 4 spacers/sleeves that each bolt goes through which lifts the rear of the cart. This seems like not the best way to lift the rear for stability purposes (or is it ok?). Can’t find any pictures of this online. The front is a spindle lift which looks like Allsports spindles? If this is in fact an older all sports lift of some sort, could I replace the weird rear lift with some blocks and U bolts? And finally, how to measure to determine exactly what size lift this is? The rear spacers things are about 4” long. I have 22x10x10 tires and clear them with not problems. Thanks!