Yes I'm doing the front and rear bumper swap. I followed @
2nd Chance build that he did on his Limited conversion to a TRD Pro. His build
http://www.toyota-4runner.org/5th-gen-t4rs/203958-trd-limited-fat-bike-hauler-v1-1-a-10.html is my inspiration! Slowly getting there :biggrin2:
The swap is unfortunately not straight forward. There are different internal brackets, supports, etc that need to be changed out. It's also not a cheap swap either considering all the new support parts and especially the bumper covers and then having it painted unless you are lucky to find a good used bumper cover on ebay in the exact color.
It took me several months to slowly accumulate all the necessary parts; buying it new/used on ebay or from an online Toyota retailer to find the best deals. I can send you a spreadsheet of all the parts required to do the full swap of the front & rear bumpers as well as the side rocker panels.
As for the sensors you will need to drill 22mm holes into the SR5/Trail bumper covers. The factory sensor holes are not a complete circular hole as there is a small cut out as you can see in the pic below that "lock" the sensor clip/holster in position. The sensor will only slide and fit into the sensor clip/holster in one way so the sensor clip/holster needs to be oriented on the bumper in the same way as it was on the Limited. The sensor clip/holster will fit and be secured in the 22mm holes that you drilled but it will rotate. You will need to secure the back of the sensor with strong adhesive tape to the back inside of the bumper to keep the sensor in position and not rotate or come loose.
I'm here to help if you have any other questions