let me preface this by saying sorry if my posts are kinda incoherent, i spent last night/early this morning in the er for extreme kidney pain and im pretty much floating sowhere around pluto right now.

Based off of what you gave me here are some possibilities. (keep in mind the boost numbers are optimistic, you'll probably run less)

everything here figures a 14.4psi level and i did 130 degree intake temps because you never know with a turbo setup until you actually do it, so i gave some overhead

and also keep in mind, you are low on the maps because youre forced to run a large turbo due to the cfm requirements.

the points plotted, from left to right are 1000, 3000, 3400, 3800, 550, 5875, and 6250

gt4202r


gt4294r


gt4508r


gt4708


T-76


T-80


Borg Warner S362



those are the best fits.
For a street car, while keeping the price reasonable. the t76 is a perfect fit. You dont really have any growth room, but its ideal.
It will also be the most responsive out of the group, neck and neck with the gt4202r

which is also decent and has room for growth.

The T-80 is also perfect, because youre in the highest efficiency island at peak boost and rpm. but its an oddball turbo to find.