According to Hollander, the '90 3.0L MM cams are the same as the '89 Montero and a LOT of Chrysler products, including Acclaim, LeBaron, minivans, etc. I'm not sure I completely trust the data on this interchange, though.

To be sure, see if you can get info here from someone who has a FSM on the 3.0L MM.

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