Is there a difference in oil tanks? '74 vs '78

[Porsche_911s]

Is there a difference in oil tanks? '74 vs '78

Are the '74 oil tanks stainless steal with copper necks? Is a '74 & '78 stock oil tank the same tank?

I am about to do some part swapping and wanted to double check. My '74 tank was cleaned and has been running and if the '78 tank is the same tank I am not going to switch it out.

Thanks,

[DohertyCM]

Dont know if they are the same, but my 74 tank is all copper...I had taken it out and cleaned all the tar and grime off and it was a nice pretty copper color...

[Porsche_911s]

Well I guess they are different. The '78 I was cleaning appeared to be stainless with copper necks.

Thanks for the reply!