Longer shackles have been added to the list of mods. Any lift from them will be a side issue that will require further adjustments. I'll probably just use the measuring technique that Jim Grammer described to get them long enough to function properly but no more. I'll probably stick with the stock shackles in the beginning why I make or buy the new ones. I'll probably just make them. The ones I have seen on the market would be easy to make and cost a lot more than bar stock and square tube.