First of all a big welcome to the E21 forums!
Now second, I'm a massive fan of the E23 and pretty much all the 1980s model bmws, just love a shark nose. Had a few e23/e28/e30s, but I always go back to E21s in the end.
But you're E21 320i looks pretty good, you just need to get a hold of some euro style bumpers and it would be perfect

but otherwise all I can really say is post more pics of the e21!! We can never have too many pictures.