why not just buy a good e30 and do the swap yourself?
pretty mint e30 4000$ to 4500$
S52 and zf tranny 2500 from Tom at Bimmer auto
AA supercharger 4000$
other parts for swap... 500$-1000$
total 11000-12000$ for a minty s52 swapped supercharged e30 that'll rip yer balls off..
so why not?