If the '98 heads and valve covers are similar to the Gen1s, there is a half-round hump at the front and rear of the head which forms the bearing block for the SOHC. It is necessary to put a bead of RTV in the corners between the flat portion of the head and the beginning of the semi-circular cam block...... 1/2" in each direction from the corners. Failure to do so will result in leaks.

Frank

'89 [color:"white"]G-Raider[color:"white"] [color:"black"]Supercharged 3.0L, MegaSquirt 2, lockup A/T, 2.5" exhaust, 172k, Cibie H4s/Oscar SCs, Hella Micro DE fogs, Cobra CB, Superwinch hubs, LSD rear/Aussie Locker front, Bilsteins, Lifeline AGM, Rust-Oleum