u dont want to buy a stivo because u have so many mods on your car right now right, maybe u should put the car back to stock trade it for a stivo and put all the parts u have onto the stivo, and there u have a hot hot looking REAL stivo, and u dont have to worry about if they did a good job in swaping the engine. if u still decide to do an engine swap make sure u get all the other bits up to date as well, eg: brakes, springs, shocks