Thanks guys for the recommendations, i really appreciate it.
The Alturn one and the bluebird ones look good.
Ive got a bluebird servo in my slash and its still going as strong as ever.
So i got to looking at other BB servos and i found this....
But, thats a little expensive. I can get a 1/5 40kg servo for $50 including postage... but only problem would be making a mount for it.
And both are going to need a BEC....