Hi! i had the same requirements din... un ung mga usual requirements for late registered birth cert...
1) you can get the true copy of your permanent records sa school kung saan ka ng-graduate... un ung grades na nakuha mo from grade one to 4th year HS.
2. for voter's ID makukuha mo un sa comelec... but sa case ko i submitted voter's cert instead kasi i've been told it would take 2-3 months before they release it (goverment thing)... i included a letter nalang when i submitted the requirements why i can't submit voter's ID....
hope these help....
good day!