So why not truly invest in a solid topmount setup?
Putting a t28 topmount will be more of a pain... need custom downpipe, custom lines, custom intercooler piping....thats a nightmare.
And all that work for stockish hp. A solid stock bottom mount can be done right. No need to service it with quality parts(lines, gaskets and locking hardware)
But if you got ur heart set on a top mount atleast go with a t3/t4 setup, z32 maf 480cc/550 injectors and safc...this is not a proper setup but has been proven time and time to "work" and be a budget setup
https://www.google.com/search?q=sr20...dkphiTle6ivFtM
This doesnt look any more serviceable then a bottom mount...