Hi all, I have a set of what I was told were probably either TA or Poston (see pic). I have been trying to get the driver's side header into place. passengers side is easy. Currently, the engine (455) is in without the z bar installed. I am thinking that with a lift, the header will fit in there as things are, but I don't have one. I have read before that it would be better to lay it in with the engine out of the way, and then lower her back in. my concern before I do that is fitment with the z bar in place. I expect to have to make some dimples, but is it even doable? I also realize that the brake lines will need to be re-routed. Thanks for your input in advance.