Universal battery trayt

[03Alerosil]

Hey everyone. as some people know i recently put a 34/78 yellowtop in my car and i'm searching for a more secure battery tray/ hold-down option without buying a $60 billet aluminum tray for it. Any thoughts on a universal tray and a j-hook style hold-down that goes over the top to hold the batter down? I also want to add I have no issues drilling holes in the car to anchor the tray down. My Alero is by no means a show car.

Thanks