Thats my Baby
as far as I can tell, it is proper (but I am still trying to find out). Then engine has a really unique tone to it, and it has loads of power (well above 3000 rpm).
Recently imported it from Japan, 120 000 km. Most fun car to drive.
You must be the e30, a couple of blocks south of me, I spotted it the other day and have been trying to find it again to take a good look at, NICE.