Ill take another look into the DV relocation 
Being brutally honest...I doubt you'd need it.
I don't think you will be running your turbo outwith it's efficiency curve to turn it into a heat pump...so you should be OK.
Start really pushing it though, and it's worth considering.
FD as Russ above says,
Have you got one?
I think my mate has a spare 3.3 sitting about, as he recently fitted my old 3.67 (16v) FD to his NA VR6.
It's in a box all ready to install...if you need one, I can ask for you.
It's a known FD out of a 17,000 from new VR6 'box - my old high spec 2.9 (228 BHP/210 lb-ft, NA)
on the motorway im at 4k revs at 100mph but its right on the powerband - feels like im in 3rd, iv had the car right upto 140 indicated on the clocks and it had more
but i just feel the VR final drive would suit it better. Plan to fit this wheh i fit a LSD
Pfft...
I have been running running 4000 RPM @ 68 MPH. :-)
Mine will pull 7300 in 6th...at around 138 MPH genuine. Well, it will when all 4 cylinders decide to fire.
then next year maybe look at Bigger Turbos. also want a INA sump as iv hit mine a few times
Cool.
Carbon said 260 -270 bhp is possible. iv also had a few people tell me its best to hold the Torque back to aid traction (as you mention above)
In my experience with my K04 AMK, I'd say that with your downpipe and FMIC, 270 BHP is entirely realistic...if not nearer 275 BHP, and still without maxing out the injectors (I was running 90% duty cycle at just over 275 BHP on mine)...especially if you aren't making the turbo work too hard midrange.
Pegging the boost back at 3000-4000 RPM (say 270 lb-ft) should give the turbo an easy job...and allow 270+ BHP top end...and it should still feel reasonably linear - unlike my old s3 which felt like a TDI.
Once you have the longer FD, then another 10-20 lb-ft midrange shouldn't be a problem.
Much over 290 becomes an issue though, especially on an old Mk3 chassis...I used to run the S3 at around 320 lb-ft as you could just break traction on all 4 wheels in the wet, and it was solid in the dry...at 330+ lb-ft it was undrivable, you were always fighting the grip, the chassis and the silly Haldex...and it was slower from A to B than at 320 lb-ft.
You could always add Racelogic TCS and go for 300+ lb-ft?
