318 TT T25 help

Hi all, starting my next project and got a couple of Nissan Skyline GT-R factory turbos to fit to a 318. I think they are T25's, I wont be revving it beyond 4500RPM but will be looking for lots of torque. The heads have been ported, using a 215@50 cam making around 300hp N/A. Would adding these type of turbos be a total waste of time or will they contribute to a really good torque curve from around 1500 to 4000 RPM? I'm not looking for a high HP drag car but something with neck snapping torque. Cheers for any advice