I collect fossils and gemstones, It is indeed possible but will require a tremendous amount of work and money.

You're best bet is going to be doing it piece meal (Even the dinosaurs you see in the Museums aren't actually "complete" many of the pieces are replicas or what they think that particular bone should be)

One of my fav sites (Legit business) is http://www.paleodirect.com/

They've got a lot of good stuff. Honestly though you'd be better off buying a "museum quality" replica of the entire skeleton. A real preserved skeleton would require a good amount of upkeep not to mention the "right/wrong" issues of keeping something like that for private use.

More on reddit.com

Spinosaurus teeth are super common in Morocco. So much so that you can buy real, smaller ones for under $10. No one will waste the effort to fake a Spinosaurus tooth unless it’s huge. If it’s small, it’s going to be real. Similar to mosasaur teeth. It would probably cost someone more to fake it then the real thing costs. Claws are extremely rare and super expensive. There are a good number of highly reputable sites that sell real fossils. Someone here complied a nice list. Edit: found the link https://www.reddit.com/r/Paleontology/comments/jjx7db/trustworthy_fossil_dealers/?utm_source=share&utm_medium=ios_app&utm_name=iossmf More on reddit.com

you shouldn't buy real dinosaur skeletons they are important for scientific research on dinosaurs but you can buy a replica More on reddit.com

https://bhigr.com/product/tyrannosaurus-rex-stan-skeleton-fossil-replica/ More on reddit.com