it will leak for sure, maybe not right away. The cobalt or diamond drill bits will cost you over $100 to fix this properly. Paying $100 is you're best option right now.
1995 E36 318is
94 M50 motor, Lightweight Flywheel, SACH clutch, UUC shifter, Electric Fan, Header and Full Exhaust, Magnaflow muffler, CAI, Racing Dynamics Chip
M3 spoiler ( Not installed yet), Projector Headlights, M3 mirrors.
Front Strut bar, Eibach spings, Billstein Struts.
M3 buckets, Reverse Glow gauges, Momo steering wheel, M3 Shift Knob, M3 Headliner