Entry-level system

Sou, after a long rum reading in various forums, I want to ask for your opinion here. I am looking for a radio and FS. the following: Car: Polo 6n Music direction: (Punk)Rock Budget: ~300 Euro I want to buy as I said only a radio and front speaker, since I don’t think I would get much more for 300? at all. Amp can be retrofitted. What do you think of the following parts? -Radio: Clarion DB348RMP (105 ? at ebay) (How important is the EQ function, for example, by nem Radio?) -FS: Rainbow SLX 265 Deluxe (120) Do the components fit together? Do they make a nice noise even without amp? How much money should/must be spent on dams? Have read here somewhere that you should not exaggerate. Ohja and I also need doorboards. Thanks already ma for your answers..