I did it by myself in a couple hours.....can't be too hard.
If you need to do your oil filter adapter, it's a good to do them together, either that or pull the whole bracket off the passenger side because the bolt hits the OFA.
also, instructions say to loosen the Trans mount, might as well throw a new one on while your at it
Just put Brown Dogs on last week. Customer service was the best I've ever seen in a company. Got the mounts 3 days after order was placed, put on the next day. And have been impressed ever since. The quality is great. Yup the poly mounts kick down a touch more vibe but not bad at all. Gonna repeat for my other xj next.