Plethora of questions about a 1989 200 Turbo Quattro

[William_SWails@mail.amsinc.com]

     I bought a 1989 Audi 200 Turbo Quattro a couple of months ago, and I 
     have a few questions:
     
     1) Where is the cheapest place to get a fuel pump? The best deal I 
     have found is about US $200 for a Bosch unit.
     
     2) My right headlight is cracked. The best price I have found on this 
     is US $185 for an aftermarket unit. Does anyone know of a better deal?
     
     3) Where can I get plastic covers to protect the headlights and how 
     much do they cost?
     
     4) Above 30 mph I hear wind noise around the bottom center of the 
     windshield. I tried putting a bead of silicone rubber below the chrome 
     strip, but it didn't help. It looks like the windshield was replaced 
     recently. Any ideas how to locate the source of the wind noise and 
     eliminate it?
     
     5) Whenever I start the car, it cranks over for about 15 seconds 
     before it fires. It seems like it is not getting any fuel for a few 
     seconds. Once it starts, it idles and runs fine. The engine just had a 
     valve job and new plugs. Any ideas why it cranks so long before 
     firing?
     
     6) When I put it in reverse, the digital readout on the climate 
     control goes blank. Is this normal?
     
     7) Where can I get  the magic spring to increase boost pressure? Are 
     there any negative side effects to increasing the boost? I live at an 
     elevation of 8,000 feet, and work at 5,500 feet, so almost all of my 
     driving is at high elevations. My boost gauge reads .8 bar at 5,000 
     feet, and only .7 bar at 8,000 feet and the most I have ever seen is 
     1.4 bar under heavy load. It seems like I could afford a substantial 
     increase in boost since I'm running in "thin air" all the time. What's 
     the maximum "safe" boost?
     
     8) When I press the brake pedal quickly, the red brake warning light 
     flashes briefly. Is this normal?
     
     9) Colorado list members-- what's the best tire choice for all season 
     mountain driving? Do I need snow tires for winter, or can I get by 
     with a good set of all season radials?
     
     Sorry for the lengthy questions, but if I can resolve these items, my 
     150,000 mile Quattro should be good as new!
     
     Thanks,
     -Bill-