you cant without alot of work because the advance is controlled by the computer. you'd have to use a crank sensor and some sort of computer to make it change the timing, cost you more to do than buying a new distributer.
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" When you men get home and face an anti-war protester, look him in the eye and shake his hand.
Then, wink at his girlfriend because she knows she's dating a pussy." General Tommy Franks

"Congressmen who willfuly take actions during wartime that damage morale and undermine the military are saboteurs and should be arrested, exiled or hanged".
President Abraham Lincoln