This next project is offered for a pretty steep price for an E30 sedan, but it is the post 87 integrated bumper model with a slew of parts -- just read this list from the seller:
S52 Engine out of a 1999 M3 auto.
Marketmotorwerks did all the engine wiring harness, ecu tune, and there motor mounts.
5-speed trans from a 1999 M3.
11.5 lb flywheel, with unsprung clutch and pressure plate.
E46 arm rest conversion. Looks amazing and is so nice to have.
Deleted side molding.
M50 minifold swap
New timing chain, and tensioners
Polyurethane mounts, rear subframe and trailing arms, front control arms.
Bilstein sport shocks all around
Front camber plates.
XXR 530 rims, 17in by 8.25 with +25 offset.
Front wheel spacers
Kamotor standard flares.
Michelin pilot super sport around 3000 miles on them
Custom sub box with hertz high energy 12 with JL 750 hd amp.
kenwood deck and hertz speakers and amp.
Fresh fluids all around.
Wheel stud conversion.
New center support bearing and trans mounts.
I know that I am missing stuff.
Of course the big ticket item is the S52 inline-6 from a 1993 M3 -- a 3.2 liter DOHC mill that is good for 240 horsepower and 236 ft-lbs of torque mated to a 5-speed manual gearbox. The seller doesn't mention if this has the optional limited-slip-diff, but adding that wouldn't be too expensive or hard to do in your driveway on a weekend.
See a faster E30 for cheap? firstname.lastname@example.org