If you want to put in a B18B engine you have to change the ecu, the tranny, the harness, and motor mounts. You have to get a auto B18A tranny because the D16's tranny won't fit. You can supercharge it too. changing the car to stick is going to cost alot of money I say professionally done $2500. The down side to having a auto is that it maybe a little slower but throw in a turbo or supercharger and you set.