Shopping for headers for a 68-9 A-body with a 350. For street use, looking for decent quality, the best fit and preferable something coated. A search on Summit brings up endless Chevy applications even when specifying Olds. Thanks

 

I've done some recent research for my SBO project, these are all 1-3/4" primaries into 3" collectors, ceramic coated:

Hooker 3107-1HKR
Headman 58196
Headman 58066
Flowtech 31150FLT

I haven't picked one yet, but these are the contenders I'm considering.

 

There is also ARH, but your going to pay a fortune for them, they are ss headers.

 

Go Hedman or Hooker. The Flowtech have thin flanges and rust very quickly.

 

Get Hookers.