Watching the car react to launching, hard acceleration, and shifting I think the suspension is set up pretty well for what he wants it to be.
While the front does rise, and fall, quickly there is no waggle, sideways stepping out, twist, or other things that are generally part of driving a high power 60's car.
Watch his steering wheel inputs...He is basically driving the car with little effort and very little correctiong required...meaning the suspension is working well.
The TKO-600, at least from my direct experience, is NOT a friendly quick shifting transmission.
A Toploader will shift quick and smooth.
A TKO-500 will shift fast and smooth.
A Muncie will shift fast and smooth.
A TKO-600 will make you look like a fool the first 35 times you try to speed shift, or clutch shift very quickly.....Then you check, recheck, and check again everything you think may be causing the problems to end up realizing they just don't shift as fast as other transmissions.
Because of this I have come to dislike the TKO-600 even if it is the go to high torque tranny.
I can literally shift a stock 3-on the tree truck tranny faster than a TKO-600.
I have a friend installing the new TKX in a Cobra roadster (FE Power) and I hope to get a chance to drive that because I really hope it is a quick, smooth shifting transmission.