i dont think its the possible.
SECC has a heatplate sandwiched between the HSF and CPU/PCB
SECC2 doesnt.
I believe the way the mounting pins are arranged are different for the SECC2 HSF and SECC Heatplate, so you couldnt really change them..
a secc and secc2 HSF are mounted differently and will not work, at least not without removing the heatlate, and some mod to attach it :-/
what are you trying to do?