Crites makes them, but they are pretty pricey and if memory serves correctly I didn't really like the way they looked. The Crites headers go for about $329 unpainted and it looks from the picture that the front tubes go under the front crossmember (very bad for ground clearance).

A good alternative are the 61-64 factory castiron headers, These came in to versions a short set and a long full legnth set. Just my opinion they look better than the afterrmaket ones and you eliminate the problem with blown header gasgets. The short style and long style both show up on E Bay on a regular basis. Expect to pay somewhere around $500 for a short set and $600 for a long set. There not that much more expensive than than the unpainted aftermarket ones.