looking for DE/AutoX suspension recommendations, building my 72 914 for street and DE/AutoX events Options

[Michael.lescault1@gmail.com]

Looking for recommendations on suspension set up for street and track use 914.

Rear;
looking at Koni "Yellow" adjustable shocks with coil over conversion or...QA1 double adjustable coil overs, or??

Lower swing arms; monoballs, or polygraphite bushings, or??

Already have installed aftermarket rear sway bar and polygraphite bushings

Front;

Lowered spindles good, or bad?

adjustable bump steer kit

Elephant racing poly bronze bushing kit, or polygraphite bushings, or??

Koni "Yellow" Sport strut inserts?

Also concerned about streetabaility/ride quality, so my wife will ride with me when street driving.

[Racer]

If I may suggest.. Read the rule book for your proposed uses (particularly AX). Sometimes, just the slightest "mod" moves you from "stock" to a fully prepared race class.
For instance, in many PCA regions, if you run camber plates, you are moved into the MOD class. Even if said camber plates are set to Zero. See.. its a letter of the rule thing.

Raised spindles will help keep geometry correct. Raised spindles could be a mod that reclassifies the car.

Same with Double adjustable shocks.

You've also not asked about shock/torsion bar rates as these should be addressed first and the shocks used to finetune the ride. Your suspension is a system. It all has to work together.

Tire size/sidewall height can have a big impact on ride quality. I've had several cars that are "firm" but not "harsh" when it comes to impacts (think expansion joints on the highway).
You also don't mention much about your driving skill set and any engine enhancements (stock 1.7? 2270 build? ) These will all impact the choices to consider imho.

Depending on the condition of your car and skill set, I would suggest driving it as is to learn the types of characteristics you wish to change.. understeer? oversteer? Cornering lean?