a few weeks ago i made a post about my car having really bad cold starts, here is the link...[ http://www.twinturbo.net/nissan/300zx/forums/technical/view/1141208/cold-start-problems.html ] it results that the issues that i was having was the fuel pump!!! the car runs and starts like a champ now, however i placed an order online to get the fuel pump and they sent me a TT bosch pump by mistake, i have a 2+2 na.... would this mess anything up? perfomance, gas mileage wise?