Very nice car and great colour.
The interior is very clean and well made, not really pimp my ride (a little though) they always overdo it. I don't like the colours of the 2 tone colourscheme, but that's personal. I just love black leather (or something similar) I like the chrome shifting lever, but lose the steering wheel. It doesn't fit in with the rest.
And you seem to have found a solution for where to put your speakers

I don't wanne cut in my door panels, and the boot leaks, so I have 2 speakers standing between my seats and rear seats
The boot looks well made too, but again not my taste. At least you don't have a TV in it

I never understood what good having a TV in your boot is. Like you're gonna sit behind your car and watch it...
And the engine... must be a blast to drive. Bet it puts a big smile on your face when you floor it. Very clean engine bay too.
I think it's a great car, it's beautiful from the outside, and it has a couple of BHP to back up the looks

And if all E21's would look original, that'd be boring. It's good to have some variety.