Actually, there are a few companies that make brackets that bolt into the front and rear of the heads that angle like an "L" shape that let you bolt the end flange of the header onto the head...

I think Jegs and Sumit may cary them, but I'll try to find the info and will post it for you.

(Sorry, it was Spotts Performance:
http://www.spottsperformance.com/headLbracket
This is all you'll need IF, you decide to keep the heads you have, and or run them until you upgrade...)

Brett - 67 Drop Top 455!