That looks just like what I had to deal with when I dismantled my current piece of yard art. If you aren't planning on any racing, I would go with stock manifolds, they come up for sale here from time to time, as for getting it back on the road, take a logical approach and go one stage at a time. Age is only a number, or at least that's what some people say, as long as you still enjoy what you're doing it comes together easy. Good luck and keep us posted.