How do I know if my contour is a "SVT?" Its a 1997 contour sport V6. I'm trying to perform the TH Fix and it says you should drill different sized holes depending if you have "SVT" or not. Does anyone have sizes other than the ones listed in the TH Fix FAQ that work well? Or does 3/16" or 7/32" for SVT and 15/64'' for stock intake work best?