Ok so my wifes head gasket went out on her d15b7 94 4dr DX. So her grandfather who has his own shop got a D15b from japan that came with a dual weber carb IM on it. Is the bottom end such as stroke, bore and all the same on this dual carb as it is on the jdm d15b vtec? the reason i ask is cuz im bout to spend 6800$ on building a 400hp d15. i have the one with the blown gasket, my del sol has one and my wifes car has this d15b. thanks in advance.