Install video is alright I guess, other than it completely skips the most difficult part of the install (IMO), which is extracting the studs out of the turbo. Never heard of anyone getting lucky enough that they back the studs out at the same time as when they loosen the nuts.
I did the SPD turbo adapters right when I got my truck and I actually just took them off (I am cheap and didn't like the price hike from $120 to $190) a couple of days ago to trade in my truck today on a 2019 order. I will reuse them for my 2019. First time it probably took me 3 hours for the install and this past time I did it in less than 2. There is really no need to remove any of the exhaust from the truck (unless you want to) as long as you have a torch, plenty of different extensions/wobbles, stud extractor, and impact wrench. I used 2 clamps to pull the exhaust toward the rear of the truck to make enough space to get the turbo adapters out once the studs were extracted. Really wasn't that hard of a job and again, only thing I actually removed to gain access was the ********* plate under the truck.
If anyone is near Columbia, SC I am always willing to help.