Found this on ebay, since I've heard so much about what you would have to do for a gain in HP and fuel economy, I almost want to claim BS.
http://cgi.ebay.com/ebaymotors/SAVE...c0.m245&_trkparms=72:1171|65:12|39:1|240:1318
IS thoughts please.
or 
http://cgi.ebay.com/ebaymotors/SAVE...c0.m245&_trkparms=72:1171|65:12|39:1|240:1318
IS thoughts please.