What servo can I use to replace the stock servo on the belt cp?

depends on what kind you want

Right now I have Eflights on mine all the way around but soon It will be Hitec 55s all the way around

I take it they are both better?What number am I looking for in E flight

i use tower pro servos. Great upgrade for such a cheap price. I dont really see the need on putting high performance metal gear servos on a belt cp.

ELFRS75 is the part number

if you're a novice pilot i would recommend you keeping it stock completely. replace parts with oem for now. they are cheap and expendable. SAVE YOUR MONEY FOR A QUALITY BIRD. not that the belt cp is bad or anything since i own one too.
but once you have flown a nice helicopter you'll see what its like to really fly a decent bird.

HI there
Order HEXTRONIK SERVOS 9g fits plug and play in belt cp ,cheaper than stock one and 3 times better.. You can't go wrong with them. 6 months in use SO FAR SO GOOD.
PRICE AROUND $3.65. Why pay $18 or more for a servo in a belt cp??

OK thanks for the help. I will be making some changes

Except....do not replace any Esky parts with "new" Esky parts always upgrade to a better part (often for less $ then the Esky part). Ok excluding bearings, frames, hard parts (bearings) etc like that.
Only talking from experince... only thing Esky makes that is worth upgrading to is the motors and for the price they can match anything out there ... Also from experience of having over 10 popular motors that people have touted in these threads in my heli and 3 ESC (low end $ point with desirable features) to run them with. $ for $ its hard to beat the Esky 3800 3900 motors if geared correctly with the right ESC.
Soo much time on my hands, so I Easter egg parts for fun and entertainment ..