td27t terrano motor into rwd navara

[bullet69a]

Hey there

Now my sd 23 navara motor just spat the dummy and I've sourced a 27t from a terrano to replace it with. Now I've swapped the bellhousing over but do I also need to swap sumps as its red now not 4wd?
Also my navara has no rev counter from factory but I've replaced the dash with the terrano one.. So where do I get the wires to run rp. Gauge?

Thanks