Could you share more information regarding this lift?

Clevis lift is a simple lift by using few washers between the clevis fork and the bottom of the strut.
Below is the how to on doing clevis lift, it might help you understand.
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?t=168

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05 Liberty 4x4, Atlantic Blue
Extended Breathers
3/4 Mopar Skids
OME Lift, 245/75/16 General Grabbers AT2, ProComp Extreme Alloys 7189
Mopar Tow Hooks

Heres my clevis lift I used alot of nuts I figure as long as your bolt is above the bottom of the strut you wont have any problems, at any rate all the forces here are linier (up/down) in motion so I'm not worried.

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2006 CRD Sport
MOPAR skid plates, RRO Rock Rails, tow hooks, JKS quck disconnects, 245/75R16LT Uniroyal Liberator A/Ts. OME790s and Rancho RSX17505 struts in the front OME948s and Rancho 17004s.
http://www.cardomain.com/id/theuniverseman
Member ID Rockies 069661

Oh and don't mess with the upper ball joint like that guide says, I have slipped my struts in and out several times you just have to pry the clevis apart alittle bit and work it down, nothing hard about it.

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2006 CRD Sport
MOPAR skid plates, RRO Rock Rails, tow hooks, JKS quck disconnects, 245/75R16LT Uniroyal Liberator A/Ts. OME790s and Rancho RSX17505 struts in the front OME948s and Rancho 17004s.
http://www.cardomain.com/id/theuniverseman
Member ID Rockies 069661

What size washers did you use?

2" conduit nuts, you should be able to get them at any hardware store/rona/home depot ei.

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**REMEMBER YOU CAN ALWAYS GET A HUMMER IN A JEEP.... YOU CAN'T GET A JEEP IN A HUMMER**
2003 Jeep Liberty(KJ) Renegade,235/75/16 Goodyear Wrangler Silent Armors 245/75/16 MTR's,Factory Skids, Selec-Trac,trac lock,Husky Floor Liners,OME Lift,948 rear/926 front,Rusty's strut plate,clevis 2.5 "s, Al's UCA's Gen 4.5.