I think its a C series engine from toyota. If you want to use it off the road put a 3c.te engine it which is turbo version. 3C.te gives abou 10, 11 kms in city and 14,15 on high way with a light fo0t.
Best of luck with ur ride and welc0me in the world of 4x4s.
By the way i am Tariq Rind. Remember me?