Who sells 1- 7/8 headers for 68 barracuda

http://www.ttiexhaust.com/ I did ‘t see, TTI doesn’t list big block in A body headers. Nor does Hedman. But the do list the “Race headers for big blocks in A bodies.

Engine Performance & Vehicle Customizing Products From Hedman | Hedman Performance Group

MoPars start on page 5;
https://www.hedman.com/drag-racing-headers