E30 arrowline?

Can anybody give me some info? I have recently purchased an e30.it is a south african import.It has an m tech body kit,factory leather,air con and electric pack.On the log book it says it has a 2.7 alpina engine.I had heard that thes cars were special editions which were raced in south africa,possibly called arrowlines.Is this true.Can anybody shed some light on what the spec and history of the car is.Thanks.