I see what your trying to do but you need a 55 with a completely removable lid... unless you can fit your arm through the holes on top which I doubt... come on guys!
Really depends what u are trying 2 do with it?
If for ro/di storage just drill side with 1/4" bit for intake line.
Buttom with hole hog insert bulkhead add 4' hose with ball valve done.
SawsAll cut a hole the size you want. I cut one the size of the half moon around the plug. you can put whatever you want in the tank and the rest stays out