FYI - you had an earlier question about OTT.
the On The Top lift is the budget lift at Rocky Road and the strut spacer at Rusty's (not certain about Rusty's name for his) - most people installing these commonly kill the front struts very quickly, so there are many negative posts about OTT lifts.
and at the same time we do have a couple of people running them successfully - but they had modify the front stops to prevent them from topping out.
So they can work, but the odds are you'll kill some front struts before you get them debugged (the spring kits are cheaper in the long run)
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2005 CRD
stuffSkeptic quod gratis asseritur, gratis negatur