bucket seat hole location

Hi guys me again.My 69 Dart had a bench seat and now i am installing 68 cuda bucket seats.my Q is i see on my floor pans were the factory stamp the location for buckets to fit.is it safe to drill thease or should i measure first.PS hope Gramps wife is doing better.

Holley Crap Slow Down Your Going Too Have It Finished Before We Even Get Any Snow. Just Kidding Get It Done So We Can Head For The Shows In The Spring. If Gas Stays This Cheap I Might Be Able Too Drive It More Than Just Cruises. Maybe Get Together With Gord How Has A 69 Dart As Well And Head For A Long All Day Drive. If You Want You Can Pick Up The Carb Any Time You Want.