It oils the rockers 2nd bolt from the rear on both left & right heads, the head is also drilled for oiling 2nd from the front but does not oil the rockers through that bolt hole, so you can put the heads on either side & it will still oil the rockers from the 2nd bolt from the rear, firewall side.

1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5