hm..well not %100 percent sure then on the placement. But assuming they didnt move it too far. the fuel filter on my E30 was on the same side just that it was underneath the rear seat.
Fuel pump, most likely is in the tank. I was looking on realoem.com and it seems the filter is built into the fuel pump? what the hell.
You may want to check www.realoem.com
and search fuel filter. Its also a good site to reference part numbers and some part locations