question on who made these

thx boost junkie for your help looking forward to seeing if they match up
just haven't seen any with bends like that and so compact

The ATR stock replacement header did not look like there other Headers I am on the road it will be a few hours before I can post pics but I am pretty sure that's what you have
 
haha them boys can hijack anytime , the senior affect CLASSIC
chuck can do what ever he wants , don't wanna mess with ole James dean :p
 
Here is a picture of a brand new ATR header I found in my stash.
P1020655.JPGP1020656.JPG
 
After thinking about this a few days, I recall you could use the header from a mid-80s FWD big car like LeSabre. There is a chance it is GM, just not the normal application.
 
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