Mazda van mods, HELP, 12A????
 

G'day
I have a 'E' series 1400cc short wheel base van that my son and I both love. We have taken it on lots of adventures, including jumping trees and motorbike jumps, and the more we beat it the better it gets!
Tommorow we plan on servicing it and we were just wondering if anyone knows of any easy "home" mods we could do to coax a little more power from the beast? Or any mods at all for that matter??
Also if anyone knows anything about mazda rotary engines, i am thinking of putting a 12A in it, because it is a relatively simple easy to work on rotary. Or does anyone have any other thoughts on the matter?
Any help would be much appreciated.
Cheers, Gareth, Matt and the Ralley van.