if your car is a 90 it may already have the 9.1:1 pistons. some 89's had the 8.6:1. and 9.1:1 is low enough for turbo. 911 turbos have that ratio, and a guy who got 350 rear wheel horsepower on stock 91-98 pistons has 9.5:1 <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt='
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