I believe there are kits made to mate those blowers from the DOHC 4.6 to the SOHC 4.6 that's in your GT. It's been a while since I've heard of any results from those kits but I don't think they make as much power as buying a similar blower such as a Kenne Bell, Saleen or Roush though.
Hopefully someone with more recent info will chime in.
Hopefully someone with more recent info will chime in.