I am working on a project with Heidts right now (project "Re-Peeled" by D&Z Customs LLC.) in the members/projects/introductions section. We made a complete bolt in I.R.S. system for the 70-81 2nd gens. I will be able to give more feed back on how well it all works in about a month & 1/2. We are talking about doing a bolt in 67-69 I.R.S. system also.
Thanks Randy(D&Z Customs LLC.)
1-262-347-9741