Okay thanks for the answers, i think i will consider to buy a 1st series or to buy the ´81 and leave it as its originally was build!
But it´s no hurry, i still have my nice 1st series 127, wonderful car! I´d jyst thought the ´81 model i saw was cheap, the price is only 1000,- kr, the same as 125,- euro!
-Mark