I don't have an XP8, but I was active on the forum that had the most information about them over ten years ago. You might go onto that forum if it's still alive, to post your truck information so they can inventory it(and the features). They would appreciate it, that site has always been the best place to lean about the XP8 and XP6's. I miss those guys, but Rob who ran it stepped back a bit and things changed a lot there.
I haven't posted about my plans for years, but I collected the XP8 wing first, then a front bumper turned up, and later a mangled rear bumper cover. I didn't originally want to do much, the wing was big on my want list. But the Saleen parts do look amazing considering other body kit brands etc. I wouldn't mind finding the side pieces, but those six, to find intact, and feasibly, I'm not expecting to.
I did the lowering of my 98 Mountaineer early in 2004, and rebuilt the suspension a year later, and then custom brakes. After that time just flew, got more parts and plans, but didn't start the big things. Now I've finally found a solid body 98 Limited, to replace(fix) the corrosion issues of the Mounty(from Milwaukee). This Limited needs a lot of work, it was neglected in many ways.
When it's mechanically sound again, then I'll begin with the BW4406 A4WD swap, and new fully built trans. You already know how bad the exhausts are. I'm going to fabricate a new one, from the back forward, 3" dual everything. I'll leave the collector ends in place, and make some log manifolds. That may force me to swap cheap heads on to get rid of the "P" manifolds. I have new bigger calipers to upgrade the SSBC I've been using(pads are too small). Do that and test along the way, then fab the parts to make a KB 2200 blower work, that I've had for ages. The XP8 parts will go on somewhere along then, with new seats, all Ford badges gone, Mountaineer grille etc, body and paint work, and later a new 332 engine.
I'm getting older and slower, that's my bucket list now. Regards,