Okay, suppose some company comes up with a solution for the CV problem. Could you throw a spacer underneath the frankenlift setup? The thing should still have the same flex right? Just a little more clearance for bigger tires than 245/75s right?

The ride would be more stiff than the frankenlift is all by itself, but it could theoretically wheel better because of the extra clearance and traction afforded by the bigger tires.

Is the CV solution a pipe dream though?
I've read about people putting a boot-extension on the CV boot, but how about bracketry to lower the underpinnings and lessen the CV angles, thats what superlift is doing, maybe we can get another company to fab up some brackets for people with other lifts...

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Current Jeep: 2003 TJ Sahara 4x4, 2"BL, Dana 44 rear, traclock, etc...
Previous Jeep: 2003 KJ Limited 4x4. Frankenlifted.
www.cardomain.com/id/sapien

http://www.cardomain.com/ride/304497/1

If you go much higher you'll need somebody to produce longer A-arms as well.

Theoretically, yes though.