I bought this one off ebay http://cgi.ebay.com/ebaymotors/HEAT...r_Truck_Parts_Accessories&hash=item5adeaa3987 but I have dual vacuum lines for this one http://cgi.ebay.com/ebaymotors/HEAT...r_Truck_Parts_Accessories&hash=item19b264f50e can I adapt the first one in? ps This valve a dual or single vacuum port? http://cgi.ebay.com/ebaymotors/FOUR...r_Truck_Parts_Accessories&hash=item5ae08b63f4