The below link goes to my site where I detailed the installation of a 4" Tuff Country lift with a rear shackle flip.

linky (http://yukon.b0xen.us/lift.html)

After I think 1 1/2 years I am still happy with the lift and would only make a few changes. First, I would have gone 6 inches if I had to do it over again. I would also have gone with a different rear setup. Since I am going with a flatbed someday in the future (meaning when I have extra $$) I would still do the shackle flip and then some conseravative 2 inch springs to get to 6 inches of lift. If I wasn't going with a flatbed I would have second thoughts about the shackle flip. The rear axle is moved foward a bit and the wheels are no longer centered in the wheel well. No biggie, but just something to be aware of.

I would also go with different shocks. I'm not too impressed with the Tuff Country shocks. I think I would like the Rancho RS9000 or RS5000's better. The front end can get pretty bouncy at times and I think better shocks up front would control that better.

I would definitely do the front shackle replacement. The ones I am using from www.offroaddesign.com (http://www.offroaddesign.com) are much beefier than the stock ones. I am also very impressed with the greaseable bushings that I used on the front and rear springs. Absolutely no squeeking plus added life.

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1969 C20 4x4 with 4" lift and 35's
residing near Rose Hill, Kansas

Yukon Jack's Web Pages (http://www.j0ker.org/~yukon/)

Jack was wondering which lift you got from them, the soft ride or the the other one. I went with the soft ride first and it seemed to me to be too soft. The heavy duty springs are a lot more firm to me.

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67 stepside 4x4 Owensville MO mudder67@hotmail.com (http://mudder67@hotmail.com)

I can't say that I remember even discussing types of springs so I'm guessing I have the easy rather than HD springs. Interesting.

ORD sells zero rate 1" add a leafs that move the rear axle back to put it in the right spot! thats what i think i'll do.....

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My Truck pictures (http://communities.msn.com/68K10/photoalbums.msnw)

www.xframeimpala.com (http://www.geocities.com/xframeimpala)

68 4x4 short fleetside 327 CH465 edelbrock intake and carb MSD distributor its the "SHAGROLET"
56 big window short stepside 235 dual 1 brls
64ImpalaSS 327
70 C10 LWB fleetside custom/10 350/TH350
IM me on aol SN= SHAGROLET

But doesn't the center pin go through the whole stack of leafs? If it doesn't, I can see how that would move the axle back, but if the pin goes through all of the leafs I can't see how the axle location changes.

the pin goes through all the leafs.

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67 stepside 4x4 Owensville MO mudder67@hotmail.com (http://mudder67@hotmail.com)

i dunno but ORD makes it........ im going to call them up and talk about how to lift my 68 ..... when im ready to order

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My Truck pictures (http://communities.msn.com/68K10/photoalbums.msnw)

www.xframeimpala.com (http://www.geocities.com/xframeimpala)

68 4x4 short fleetside 327 CH465 edelbrock intake and carb MSD distributor its the "SHAGROLET"
56 big window short stepside 235 dual 1 brls
64ImpalaSS 327
70 C10 LWB fleetside custom/10 350/TH350
IM me on aol SN= SHAGROLET

They are very helpful at offroaddesign so they will get you where you want to go but at least when I was dealing with Stephen his knowledge of the 67-72's was somewhat limited. With your knowledge about 67-72's and his lift knowledge you will be good to go.