Fuel Pumps

[GTI-R34]

Hi guys

i have a question about the fuel pump.

The fuel pump (gtr r32) has gone and i was wondering what fuel pump do you guys use as a replacement

cause i have a walbro 255 that i was going to use for my pulsar gti-r but instead i tought i could use it for the GTR if it fits.

but the original pump is much fatter than the walbro

what can i do to make it fit or do i need to order another pump? did a search and found that you guys uses a the rubber to fill in the space ?

thanks in advanced

Myron