so im about to buy another sedan with a JDM d15 vtec swap in it. The owner says they come stock with like 135 horsepower. the stock d15 in my last sedan of course had the 92 horsepower. but whats the diffrence between the JDM vtec d15 and the D16Z6 head being bolted onto a D15B7 block mini swap? is it like the same thing?