I have three hydrobootser two witch are for sale. One is on my truck now, checking to see if it leaks and the other one is in the box. They have a 4" push rod length. Good for a hydro conversion like I did. They sould fit 1999-2006 trucks. My have to enlarge your firewall to fit. When you remove your factory booster you will see what needs to be trimmed. If the four bolt partern is not the same you can drill a new hole in the hydrobooster backing plate and add one bolt. the one on my truck right now any has three and it holds fine. $100 each.


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