Vin code confusion

[MoparTex]

I'm trying to decode the vin on my 80 Mirada Cmx
xh22car180xxx
x=Magnum Charger Is this because they are Miradas forerunners ?
h=price class high
2=2 door
2=B pillar hardtop-I thought it was classed as a coupe ?
c=engine 225 1bbl slant 6- its got a 318?
a=last digit of year ?
r=Windsor production plant
180xxx = production sequence

Any help on my ?

 

[440 Volare]

Engine swap with Schumacher mounts or different K member.

 

[Dr Lebaron]

X-Dodge
H-High Class
22-2 dr B piller hard top
C-225 1bbl
A-1980
R-Windsor built

The data plate under the hood will have the same numbers too.

 

[MoparTex]

I only have the title for now. The car won't get here until the 30th. I hope to further clarify what it actually came with from the data plate. I'm just anxious to get started!

 

[Dr Lebaron]

If there was a motor swap, the data plate will say for sure.

Now if the C is really a G, there's the problem.
G is 318 2bbl.