Here is some details on the transmission tunnel for those who like to get on the Auto to Manual conversion on a JZX90/GX90
This is the R154 gearbox on the stock GX90 auto chassis. Look at the rubber boot and gear lever hitting the chassis. The gearbox mount is far away to be bolted to the chassis.
Some measurements are made and chassis are cut.At this point the front shifter linkage still stuck under the tunnel,hencc the gearbox mount could not be bolted.
A further measurements and cuts are made to clear the shifter linkage. Now it is clear and gearbox mount could be bolted down.
To cover up the gaping hole,a piece of Manual JZX90 chassis tunnel is cut and welded to the Auto chassis,now the gear lever gaiter can be fitted on to the new tunnel.