I went from a 150 to a later model 150, ordered some spares for refitting and one of the bolts was wrong.
if you go second hand try to get the oil feed hose and bolts with it just incase.
if you go new double check threads feel ok.
yes there should be room for few more hp over the old 140 turbo slightly different sizes internally, slightly larger turbine exducer, larger vnt vanes height, slightly smaller compressor inducer but possibly newer design so better flow.
this is same turbo as on 170hp ducati etc models so considered safe(by most) for 200hp.
some of the the numbers for the later models is
760497-1(was my stilo 150 jtdm)
777250-1(was what I swopped to,but modded)
be carefull to check the engine block oilway is clear (see oil coming out,crank with injectors unplugged)prior to fitting and micro filter in banjo is cleaned or new along with feed pipe and drain pipe are both clean and freeflowing or new (especially as the old one has probably had an oil issue to break the shaft).
and prime turbo with oil to flood bearing prior to fitting, and again id crank after feed hose is on to visually see oil dripping from drain, before fitting drain hose, your then 100% sure you have oil flow and return.
this was mine cranking flow at block exit
no oil can kill turbo in seconds of actual running.