J's 87Sicivic

Hey everyone,

I just got my Si just a little bit ago. Im very happy with its performance, but it could be better. I know that the D15 and the D16 use the same head gasket. Has anyone swapped out the 12v head for a 16v head? If that wont work, what could i possibly do to the D15A3 to get more power. I was looking at parts there is a lot of aftermarket goodies for the 88 and up civics but the parts for the 87 and down are slim and none... is there cams and oversize pistons avalible?

thanx

Jamie