Since my D16z6 engine is jack up. and i have an extra complete D16a6 engine. I was wondering if I can use the lower block of the D16a6 and the top block from the D16z6 VTEC head and use the existing OBD1 stuff from the D16z6 and switch it over to the D16a6 block. Oh btw, this is going into my 95 Civic EX. You think it would work? Or do i need to buy another D16z6 engine? Shit, and would it pass smog if i did this?