The RB6 shell and the one you posted are cab forward so not really sure what you mean? The 22 and 22.20 shell are 'tall' enough to house electrics. If you are wanting height the 22.20 kit shell has been re designed with this in mind and although at first glance looks very similar it is taller. There is also now and official TLR cab forward shell.
http://www.petitrc.com/setup/losi/se...t_Build/6.html
If you scroll down both of the new shells are pictures and both are official TLR products