You will jump for joy once you see what those flanged connectors allow you to do. No issues. I don't know why someone doesn't make a header that has the isolated #1 tube go straight down and under the LCA and then back to tie into a slip fit collector. Equal length is nothing. Fitment is everything! The 3-5-7 can coexist in the space offered and the design that has the #3 fly over the #5 and double back before the #7 (common in one piece 67 headers) are prime candidates for a #1 tube cut and fit mod. Modern headers already dip under the suspension level.
