Hey Pete! How are you doing buddy?!

I went all Firm Feel on the front end on my '71 Cuda duing the 6.1 Hemi swap.

Quality parts and excellent service from Dick and Dennis

I went with the 11/16" tie-rod combo set since I was starting from new. If you already rebuilt the suspension, I really doubt you will feel any difference with the 9/16" tie-rods you have already.
if you got the $175 burning a hole in your pocket and want the piece of mind, go ahead and get the FF's set-up. Best priced set on the market. If not, wait till you need to do your front end and then swap em out.

Here's a few pics of my Firm Feel parts