Yes. But it depends what car you are planning to do it in. Sprinter (or other rear drive application) Yes. AE82 or AW11 etc NO. Theres just not enough room.
Ive had this setup happily running in my sprinter for over a year using the standard computer and pulleys and getting 11-12psi.
The install can be a little fiddly but isnt too bad.
The bonus of this conversion is that the bigger s/c is still making power at 6500rpm whereas the sc12 will start to taper off after 5500. Plus you still get the strong bottom end.
Plus theres also the option of running a bigger pulley as currently i'm spinning it slower than it would spin on the 1g, which runs a slightly bigger crank pulley to the 4agze.
If ya want more info let me know and i might be able to help you.