I didn't mean to make you paranoid, lol. It's just not too common to see bottom mounted spacers. I'm no welder by any means, but I think since those spacers are aluminum and your springs and control arms are steel, it would be a royal PITA to spot weld the aluminum spacers to the steel.
If you want my honest opinion, from the looks of them installed, I just wouldn't trust them the way they sit in the spring bucket in the control arm. The bottom of the spring, the way it sits in the lower control arm in the stock location is isolated. The way those spacers sit in the bucket, it appears the spacer itself isn't even isolated in the lower control arm and the groove in the spacer for the spring to rest in, looks narrower then the spring itself.
If it were my truck, I'd yank them out and just pony up the dough for Daystar spacers. Sure, they're gonna set you back about $131 versus the $30 the ones you have cost, but the piece of mind knowing that you are installing a more common used way of leveling is priceless.
Dave (Ramhunter) could prob put his input in on these and shed some more light on them. Remember, I ain't saying what you have is unsafe or otherwise, I am just stating my opinion.
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