Post [Q] About my lenovo a1-07

hi guys, can u help me? i want to flash my lenovo a1-07 with a new rom (my rom is 2.3.4), like slimdroid 8.1 but i dont understand why said (in the post) "for 16gb" and "for 2 gb"
my tablet have 1.2gb internal memory and 12gb in internal sd (i saw this checking in the tablet , in configuration).
so i dont know what post (for 2gb or for 16gb) do i need to follow, can u help me?
thnxs guys