The file 'Jeep TJ Front 5.25 Speaker Adapter 5 1/4″ 3D Printer Model' is (stl) file type, size is 176.5KB.
I eliminated the lettering to save filament and print time and added some fillets to smooth it out and add strength. Printed with 3 top and 3 bottom layers 0.4 nozzle, 3 outer walls, 40% infill, in MG Chemical (my favorite) PETG at 244 0-40% fan since there is no bridging, the lack of cooling should make it stronger (and 70 bed on my Ender 3 Pro) YMMV
With PETG heat should NOT be an issue
tj_speaker_plain.stl | 592.2KB |