All I ask is if this is the route you take, proceed with caution!
I read something last night that Herb Adams had to say about the cars (84 and prior vettes). Two things stuck with me. First that many enthusiast changed the spring rates back to the standard springs and that the vette IRS suffered from a number of geometry and deflexion issues that included to high of a roll center and camber and toe control.
A car is a huge set of compromises designed for a given use. Change the use, the compromise gets bigger, change the design, you compromise use. If I bolt together all the 'best' parts available will I end up with the best car? Probably not.
I am not a fan of the word 'best'. WAY to subjective. I do recall when they said that about the Z51 back in the 80's. But I have also heard that word applied (in the handling department) on everything from a Honda (prelude as I recall, fastest slalom time in Road and Track history at the time) to Lotus Elise to the Ferrari Enzo. Best for one thing, best for one person, best for one time. Best period, not a reality. Needless to say, when I here the word 'best', my first thought is always 'whatever'
If you build it, I look forward to checking it out. Oh and, good luck with the retirement.
Rick