The motor with the variable valve timing is the later q45 motor, VK45. General consensus says the eariler VH45 is just as powerful as the later and more complicated VK45. You should use a pre-'95 motor to avoid OBDII woes.kool-aid54 wrote:ok since I'm still learning about the vh45, what years are the best and easiest to swap in. I've read someone mention something about the VVT engine. Sounds like extra swapping problems?