I'm thinking of upgrading my in tank fuel pump.... What size should I use..... Cause I plan on stuffing a 351w in it before to long.... Would a 255/lph be to much? My car is stock right now.... except for the exhaust....
You will be fine with that.
see what the price difference is between the 190 and the 255. If there pretty close I would get the 255. The fuel that isn't used is all returned anyways, so it shouldn't bother it at all.