That's what I get for believing
Speedway's ads.
They say they are genuine
Fenton's. I'll bet you can make 'em fit though.
I really believe in them; I installed them in 1987, and when I changed engines in 2016, I inspected the entire exhaust system thoroughly and everything was in excellent shape. I got the car out for the first time this year today, and everything seems fine (with the car, I don't know about me). My bad ankle doesn't bend enough any more and I ground the gears the first time I went into second.