uve got exactly what i have m8, i bought a 1.3 bonus, dropped in my 1'6 xr2 lump, it fits straight onto 4 speed box, all u need is lump, engine mount, rad, hoses and zaust. but as that man said, ur better off with an 3i box, as i get to top speeed too quickly but i havent had any probs up to yet with mine, and its ben about 6 months