[ubuntu] Problem in kernel Source Installation

I want to install kernel source in Ubuntu 12.04 which is not installed. I have checked the same using the following command :

dpkg -s kernel

Output is Kernel is not installed no information available

Hence I have followed the following steps to install the same:

1.Installed the Dependencies by the following command:

$ sudo apt-get install gcc libncurses5-dev git-core kernel-package fakeroot build-essential
$ sudo apt-get update && sudo apt-get upgrade

2. Download kernel source by the following command:
$ wget http://www.kernel.org/pub/linux/kern...ux-3.5.tar.bz2
$ tar -xvf linux-3.5.tar.bz2
$ cd linux-3.5/

3.Compiled the source code to generate the .deb packages by the following command

$ make-kpkg clean
$ fakeroot make-kpkg --initrd --append-to-version=-spica kernel_image kernel_headers

4. Install the .deb packages (two .deb packages generated, one is to install the kernel headers, another one is to install the kernel image) by the following command

$ sudo dpkg -i linux-*.deb

But after reboot it seems kernel is not installed (checked by dpkg -s kernel). Pls tell where I am wrong.
Also, In step 3, I guess i am installing a new kernel (named spica kernel_image) but during the boot up this new kernel is not showing as option. Pls help me