LS VTEC uses the botton end of a Integra LS motor which is known for more torque but less high end horsepower. and it uses a VTEC head from a B18 (in the Integra GSR). so you get both the low end torque and the high end horsepower. it has been known to be unrealiable. and you cannot put it into your accord. that would just be plain stupid. it is meant for light cars like integras and civics. if your gonna get an engine swap H22a is the way to go not some B series engine.