Well both engines with out a doubt are good. Perfomance wise both equal. GSR makes more power but the B18B1 LS motor has great power two. Prices GSR cost more, LS cost around $2200 for JDM full swap the LS tranny is lagg due it was design to be the cheaper and better on gas. Um if you do get an LS get a GSR tranny. You will need to convert your car to OBD1 you need a jumper harness for that. Both swaps are equal as you need to b-serious mount axles and shift linkage. Little to no wiring.