Welcome,"MYKIDSDADDY"!! Dont sweat it,,we were all the "dumbassnewguy" at one point. I have two '54s and have owned a few '55 first series. I think what you have is a '55 first series,and theres not a thing wrong with that!!
They still used the engine# which was stamped on the engine,just behind the distributor,on a smooth,machined surface. That was still the V.I.N.# back then.
Pretty much all the parts suppliers sell the repro. I.D. plates that go on the drivers side door jamb.
Maybe try going to the Nev. Motor Vehicle Dept.and filing for a lost pink slip? A couple little white lies may save you a bunch of $$$$$ and running around,hassles,signatures,forms,inspections,,etc..............
Good Luck,
Marty

Disclaimer:: I have never,nor do i condone telling fibs to any government agency to save a few bucks.
(yeah,right!)