These are my before pics...I looked
for an in tank fuel sender at the pic and pull but theirs were worse than mine...

After removing the 2 tanks i had tanks sand blasted and I primed them...I've now applied POR-15 to both tanks...

this is a close up of the fuel sender in the condition i found it...caked on dirt, grease, and grim...after pulling the access cover in the back of the car under the back seat...

the in-tank fuel sender...corrosion...

the hard lines...

electrical to the in-tank

beginning the clean up process

opps

freshly sandblaster and freshly primered

in the truck at the sandblaster's

side 2

Body Trim Fasteners

I finished up the POR-15 I had after covering the rocker panels, the front lower fenders, the rear window trim areas...the inside trunk, the openings for the rear lights, the trunk floor, bottoms of both car doors, and removed all trim fasteners...

gas tanks/lines/fuel system rebuild

...the wiring to the in tank fuel sender, with most of the original stock vent hoses...

wiring colors and plugs...i set my phone down under the car with me and when i split the tanks joining rubber hose my 'bucket' was far to small and i created somewhat of an environmental mess on the shop floor...my new iPhone was one of the several things that got soaked...

my home remedy for an environmental messes...

...before...

before....

fuel hardlines...before...

fuel tanks loaded into the back of my pickup fresh from the sandblaster's

this is the top of the in tank fuel pump and sender with the fuel sender held into place with 4 separate nuts and washers...

this is the fuel pump and sender after a through cleaning

notice the micro-fiber filter and the foot of the pump

primered tank 1

primered tank 2

shifters

We've all known for a while that the 1.9 Z3 shifter could be installed in an e21 to shorten up the throw, but as it turns out nearly all BMW shifters are interchangeable. Here's a lineup of the shortest ones. Remember the longer the shaft below the pivot, the shorter the throw. I assume the Z3 M one will hit the drive shaft on an e21, but the rest should probably work. I can't remember if our stock one has the bend in it or not.

variations in z shifters

Source - http://forums.bimmerforums.com/forum/showthread.php?t=1115650&highlight=shift+lever+throw

http://www.bmwe21.net/forum/viewtopic.php?f=5&t=17343