im buying my first boost guage , and would appreciate some recomendations from any that would care to put their $00.02 in . i also need a knock sensor as well as oil pressure , and coolant temp . so basically , we need em all , but we would like to get the best possible combination of these as possible . is there a combination boost / knock guage , thats one unit , by any chance , maybe programmable , or somehow ecm intercompatible , thats popular amongst the tr population . theres alot to choose from out there . any constructive opinion would be a very appreciated time and energy , and probably engine saver for us . we have the 87 GN . & lovin every minute of it . so far we've got some really valueable , and reliable information from yall , so thanks to everyone that takes the time to reply to us . & god bless the USA