I did the "lightest" OME set-up on my '98 and like it a lot. I netted about 1.50" up front and 1.75" out back with these parts...
Front Coils = 880 / Front Shocks = N91SC
Rear Coils = 906 / Rear Shocks = N86C

These are straight out of Australia so I doubt that they are the same thing as the FJ80 coils.

Check out this Sonoran Steel site for great information on suspension set-ups. Steve has a lot of experience with the Gen 3 4Runners and has a lot of cool parts for sale.

http://www.sonoransteel.com/store_complete_liftkits.html

Good Luck,
~Dave

'98 4Runner SR5, 3.4L, 5-Speed, 4WD >>K&N, ISR, TRD Clutch, 265/75R16 Yokohoma Geolandar AT+II's, OME (880/N91SC, 906/N86C)>> SOLD to pay bills.