79 450SL Wheel Offset
 

Hello there, I bought some wheels from a benz that was a little newer..like an 83 or something..They are the flat face style wheels.. I tried one on the front but they seem to sit in too much..dust cap is like right up to center cap..Do you guys know what type of spacer I would need to make these work? And if I would need them for the back as wheel..Any help is greatly appreciated :)

79 450sl wheel fitment
 

I forgot to mention the newer wheels are an ET49 offset

1971:

The original ET is 30.
I have a set of 19mm spacers and bolts for the ET49 wheels. $175 shipped in lower 48.