My hedman full length headers are basicallly shot. I’m seriously thinking about replacing them with a set of magnum exhaust manifolds. I’m too damn old to keep chasing leaks! What are the downsides to doing this? If its not too much of a loss I’m all for it! Stock 89 360 with a Hughes whiplash 318 cam.

Would you need to add more exhaust pipe vs headers bolt in and go?

Shouldn't loose anything unless you drive around at WOT.

Not always.................