I dont use gorilla glue now adays as in my opinion it's too messy for fiddly tubes when it's expanded and come out of each end.
Gorilla glue is a genreall term that you can get all sorts of adhesives in now, from standard PVA to superglue,
But I would treat gorilla glue (the standard stuff) as epoxy and drill with 23/64. Just be aware that the glue will push the tubes out as it expands if you don't secure them in place.
Hope this helps.