This the second of its kind at least that I know of.
This file is the ESE53 2.1 sbf file but I have replaced the stock kernel with my custom kernel overclocked to 1.1 ghz. steps are 250,600,800,900,1000,1100.
Please follow these directions.
Before beginning ensure you have the following files. (Zip file of the files below)
1) flash_image in your c:/android/tools directory (or where ever yours is located).
2) su in your c:/android/tools directory (or where ever yours is located).
2) sprecovery 0.99.3b in your sdcard root directory.
Now using the Motorola RSDlite program install this rom 2.1 Base ROM
Now follow these directions to install the custom recovery.
A) once os is installed you will need to connect it to a computer and go into the command prompt
B) next, go to your android/tools folder
C) next in the command prompt type adb push flash_image /data/local
D) next type adb push su /data/local
E) next type adb shell
F) next type su
G) next type mount -o remount,rw -t yaffs2 /dev/block/mtdblock4 /system
H) next then type: cd /system/bin
I) next type: cat /data/local/flash_image > flash_image
J) next type cat /data/local/su > su
K) next type chmod 6777 flash_image
L) next type chmod 6777 su
M) next type flash_image recovery /sdcard/recovery.img
N) next type mount -o remount,r -t yaffs2 /dev/block/mtdblock4 /system
O) next type reboot
that is it..reboot and you now have the custom recovery and an overclocked 2.1 ROM
I hope you enjoy this !!!
Both nandriod & sbf files available
You can download the files here