Question [Q] Using Kitkat 4.4 on Xperia Ion Locked Bootloader

Hi I want to use the new release Kitkat 4.4 ROM for Xperia ION posted on this thread:

How can I install it if I have my bootloader locked @MrGezz @RaymanFX @Optimus @ARNOB @AshRoller
Please I want to use and test this ROM.

Thanks for your help.