Hello! Can I use coilovers from another make (non fiat) on my 176 1.6 mpi punto. And if i can from what car .

Not without a lot of luck and decent engineering skills. Coil overs are pretty much a waste of money on a road car, anyway.

Short answer is no.

i think the question should be more why not get coilovers that are made for the car?? its not like they don't exist.