I have an 1/48 ESCI Viking at home which I can check out (unmade and I think I know where it is) if you like, but these two links should be helpful and confirm that the Italeri Viking is the ESCI one re-released:
http://www.clubhyper.com/reference/updatingyourvikingbs_1.htm
http://www.aircraftresourcecenter.com/Gal2/1501-1600/Gal1520_Viking_Kelley/gal1520.htm