Huh? Standard M66 will work fine in this setup if that were the direction you wanted to go. I'm missing the part about head removal, was that listed in the link example of the person who actually did one of these?
Welding the angle gear sleeve is an option when it strips and you don't want to buy a new one.
No name calling here, just pointing out that the information being noted in the previous post is lacking detail and is not correct.
Post #2 in this thread I asked about power goals which should always be asked in an engine build. If you also read that post, I suggest to strengthen the wear parts around the engine and XC90 overall before adding power mods. That is also known to set the car to stage 0, so it is ready for power upgrades.
Welp, there goes ggleavitt again. When modding, we usually go by cost, time, stages, and return. Mild modding, what joeycmsu is talking about are bolt-ons that don't require many extra parts and upgraded (non-engine) parts. If spending the money for an R engine, then yes, bulletproofing and doing small upgrades is worth both the time and money. I have done several engine swaps and this is the decision making and practice. People who haven't done them usually underestimate how big the "while you are in there" (and/or while the engine is out) parts and decision making is.
This thread was about the bolt-ons on a good running engine, not an R engine swap as ggleavitt suggested. But going the R route, if you do your own research ggleavitt, then you will learn about the cylinders rocking and causing internal damage when upping the boost (and sometimes just with high mileage). So, if a used R engine is a future possibility, it is always a great idea to future proof and bulletproof the engine while it is out of the vehicle. Basic things when doing mods and engine swapping. Ggleavitt it would help you if you search as you have suggested others do.
Now that Ggleavitt tried to hijack this thread, let's get back to the updates from joeycmsu. Joeycmsu has really done a good job of mapping out good upgrades that still give good drivability that all XC90 2.5t owners can learn from. Larger turbos might gain some top-end horsepower at the expense of some lower-end power loss, so choosing a 16T turbo is good for both power/drivability worlds. For others researching how to get some good modest gain, here is a decent write-up of the different sized turbos: Volvo Turbocharger Swap Guide
. Of course, you can also search Sweedspeed too.
I am looking forward to seeing how these upgrades will perform in the heavy XC90 with joeycmsu's build and updates.