Isn't an answer to exactly what you were asking but you can recover some HP by installing manual locking hubs on the front and leaving them unlocked when you don't need 4WD. If you're running AWD, shift the t-case into 2WD and unlock the hubs.

Edward


'97 Montero Sport LS 5-Speed 3.5L conversion
SAS Dana 44s & ARBs, 35" Yoko Geolandar M/Ts
NP231 B4R doubler/Terra Low231/RP 5.38 229:1
'99 Montero Sport Limited 4WD SAS 3-link project
'03 Montero Sport Limited AWD
'97 Montero Sport LS 5-Speed 4WD