My friend wants to get an hpi nitro rs4 2 like me. I was lookin at the site and on the manual it says for the servo size to be 46-51mm. Well i have been lookin for them on towerhobbies and i could find any. Can he just put these servos in:
http://www2.towerhobbies.com/cgi-bin...1&I=LXH288&P=V
They say they are 40.4mm, will they still work????

Any standard size servo will fit. Some might require a little grinding to make them fit but you can get them all in.