Have 2 litres but is it enough???

Should be...

Cheech should know drop him a pm.

Indeed he will. Doubtless it will depend of many factors from what I've learnt from him.

Sounds low. 4 litres came in my head from reading here a couple of years ago. Sure someone will jump in and confirm or correct.

2L only in paint should be enough, but this depends a lot on the painter himself. There´s also base, hardener, clear coat, disolvent...to enter in the account. But, unfortunatelly, there are guys painting with 1,5L and adding in the price 4L

Its 2 PAC btw

so have you got just 2ltrs of 2k HS topcoat .

as you should have a 1ltr of hardener and 1/2ltr of thinners.

the mix ratio will most likely be 2:1:10% . so 2parts topcoat to 1 part hardener 10% thinners . so 2ltrs will make 3ltrs or just over if you add thinners .
it may be different like 3:1 all info should be on tin or data sheet .you need to know this before you start mixing the paint for use .

you may or may not need the thinners . i normaly add some though, flows the paint better. dont over thin the paint it will all head south.

you should have enough paint as its a 2k HS (high soild) and wont need clear coat .
1-2 coats should cover and be all thats needed.

if your painting it yourself you will either pull it off to some degree or it will go badly wrong . make sure your wearing a mask while painting too , its nasty stuff to be breathing in .

good luck.