For servos, you can't go wrong with tower pro MG90S metal gear servos. 4 of them shipped with pitman arms for $16 on ebay

You need to drill the arm to accept the linkage ball, but that's no biggie, also you won't be able to use the stock servo saver, but with a metal gear servo you won't need it anyhow. I've got one in my sc and love it. Fast and strong. Mine is on a brushless steering setup, but I believe they work on the brushed steering esc side steering cars as well