The 1.6 bug eye? 2 options turbo that engine or Engine swap Stick a 4age in it. Bolts in, just a case of wiring Or 3sge/3sgte but more work is required The 4afe is basically an economy engine a bit like the 4efe so other than your typical bolt ons theyre quite limited for tuning potential Chasis wise they are good, handle well even with just a set of springs so hes got a pretty good base car