Lexus P/N PT228-60100 GX Tow receiver (650/6500lb) was a bolt on to my '11 TE. (List $391 at my local Lexus dealer) There are 4 bolts on each side, 2 large, 2 small that match to welded nut/inserts on the TE frame. The 7 pin/4 flat wiring box is relocated with an included bracket and is accessed more easily than the OE placement. In the box are also 2 spacer plates but nothing on the TE frame for them to match up to. At this point I was in to my local UHaul service center for 1.5 hours of labor ($90). The hitch is HEAVY and it really helps to have the ramps that get the back of the TE up to working height and the hydraulic jack that holds the hitch while getting it into position and bolting up. The rear bumper cover is pried on during the installation and having replacement clips available might be a good idea. At this point the very substantial hitch bolted to the frame side rails is a significant improvement over the small OE 2" bracket hitch. The spacer brackets bugged me though and further research found that when the OE TE hitch is removed, there are holes which look like they would accept the rear crossmember bracket that is OE on the LX470 P/N 51908-WY010 (List $251) and 6 more bolts 90119-12361. Don't waste your time or money on this one... the rear crossmember on the TE is about 2" closer to the rear axle than on the LX so the bracket/spacers/and hitch do not match up (found this out with another $75 labor to drop the hitch and install the bracket).