Then their might be a chance of running the Ram @ 1600 MHz speed. Since you have experience in overclocking, I think you already know about the base clock. Base Clock Speed X Ram Multiplier = Ram Speed. In your case, the desired speed is DDR 800 which is equivalent to 1600 MHz. So, check the Base clock value in BIOS.
Chances are slim as far as I can see.
Trying for FSB of 1600 MHz for RAM would result in processor too hitting that mark and in case of E5400, it would mean an effective OC of 100%, ie 5.4GHz
I think better to eye for a MAX 1333 MHz with lower latency as the RAMs mentioned here for OC can handle lower latency when running 1333 MHz
Running processor @ 1333 Mhz FSB would require a good cooler and PSU also. (effective clock speed 4.4 GHz)