Well, I got a spare upper arm modified, and had the prototype axle in to try and cycle the suspension through its new range.
Looks like the 11" is possible, the axle plunges 1-1/2" through this range, not sure if the CV can take all this or not, a slip joint may be needed. I'm wondering if a C-clip can be installed on both CV ends, but not inserted into grooves, just as a lock to keep them from coming out, but allow them to slide inward, on both, that should give ~3" of total plunge.
This shold work out to:
$700 for axles
$600 ?? dunno, maybe less?? fox shox (11" stroke)
$600 ?? shock mounting hoops, parts for modified upper arms, harware _____
$1900
Worth it? 4" more travel, and maintain stock width.....don't know if I'll get a prototype one done up or not :?