ok i am about half way through putting in a welbro 255 fuel pump and i look on the end of the box and it says that it is for a mustang????? I got most of it together already but will the pump work???? i bought it from LS1speed.com???

 

If your installation pieces work, the pump doesn't care what you put it in. The mustang is the most popular pump upgrade car and the manufactuer marketed it towards that.