/diy/ - Do It Yourself

i bought a safe that i want to mount to the wall. i went to the local hardware store and asked a guy what i should use for the load (14kg safe plus maybe 30 kg load, so up to 50kg or something) in a hollow brick wall.
he gave me some mounting hardware that is rated for up to 90kg in hollow brick, which is fine, i doubt they would have something specifically for 50kg.
its been a time since i bought the mounting hardware and i didt really look at it until my safe arrived and now i saw that this mounting hardware will not only be permanently installed into the wall with some special mortar, the bolts will also stick out a fair bit unless i modify the mounting hardware.
but the real problem is that there is apparently no intended way for the bolts to be removed afterwards without ripping a huge hole into the brick wall and covering it up.
is there some other way for me to mount an up to 50kg load in a hollow brick wall, ideally with something that can be removed somewhat cleanly/easily? i was thinking about some big dowel or something. and the mounting kit i have is pretty close to that but the mortar is not just there to fix the mounting hardware into the wall but also the bolts at the same time.