Marcos, if you will 'only' fund dampers and springs then the SUPLEX 'Front Suspension Refinement System' will suit you well, as it contains, guess: dampers and springs.
https://sites.google.com/site/morganatica/suspension/springs-progressive-rising-rate gives some info.
Dampers with 'MMC and Classic' in red are likely to be Konis, I guess these are not adjustable? Are they doing what they should do in bump & rebound? There are many options depending what your priorities are; probably best to go for some adjustables then set them to what you want; AVOs, SPAX, GAZ can all give good results.
Beware of some anti-tramp systems as they will significantly stiffen the rear suspension and worsen ride but fix tramping/windup. What are your priorities?
Panhard rod - good, no affect on ride comfort.
Just a few thoughts there ~ PJB.
