i found a 90 LS header, ceramic dc 4-2-1

well 90 is obd-0 and im obd-1.... the guy told me i might have to drill a hole for the o2 sensor and i dont know if i wanna get into that sorta stuff but it is a good price...

anybody done this? i dont wanna be the pioneer of drilling holes in headers, if it is a risky move, id rather just buy the right part from the get-go