Hi,
if you don't insist on a kit I have to suggest a great ARF. Try the HANGAR9 MUSTANG P51D.
It looks great , easy to fly with some speed on landings to avoid stall.
I am using an OS.90 as the OS.70 that I tried wasn't enough.
Some people are using SAITO 100 and they say that the power is more than efficient.
Only thing I have to notice is to change the retracts with a ROBART landing gear for more strength.
Thanos.