I just put this Duesenberg Les Trem on my Ibanez AGS83. Exact fit replacement for the stop tailpiece. Easy install. Comes with bolts for USA and import guitars. No extra holes needed. This guitar already had well-polished & lubed nut & saddle slots, so no pitch issues at all after wiggling the stick. Zero. Way easier to change strings than with a bigsby. My only negatives: IMO the bar is too long, strat-length I guess. Learning curve for the player. And, the unit is pretty tall, so might cause a problem putting the axe in the case. I have checked this one, fits in the stock Ibanez case but you do have to push down on the lid a good bit to shut it. If you do some tweaking the thing does not interfere with hand position or playing technique in general.