Welcome, Carlos! You've certainly got a great amp to be looking at updating! Tons of capacity in there to take it to entirely new levels, or just add some new, fresh caps to it and give it many decades more life.
Are you looking at doing the work yourself, or looking for someone to do it for you? Either way, there are lots here who can help you out.
I have an upgraded M1.0t which is up to what is called the Mk II, Opt 2. level. It's extremely clean and puts out massively more power, now, than I have any sane use for. I have less than no regrests going that route, though I admit I did not touch it myself - I and the amp would likely both be fried had I tried that. I can certainly attest to the sound quality (and quantity) after having the work done - well worth while.
In any case, please post some pictures of your setup when you have a couple of postings under your belt, and enjoy!