Chassis for my b3

Hello together, after using the search function I still have to ask on the topic b3 lower! Have now Rial Viper 7JX15H2 15inch rims on it, (the Audi 80 BBS rims in the same size are also still in the garage!) Now I want to put the good piece even deeper of course! … Since mine is no longer the youngest I don’t want to spend much money anyway have something halfway reasonable! From “SUPERSPORT” you get already a complete chassis quite cheap, the wa s? (approx. 170 to 200€) What I have read here so far tells me the 60/40 so best would be? What would you take if you only changed the feathers? 40/40? Does someone still have something suitable to hand in? Thank you for your help!! Greetings