Is that Dave Howlett you spoke to? Didn't know he had a quaife. What did he say about it?

I don't know about running completely without a FARB. I haven't ever tried it. Just talking from personal experience with a few stiff setups the problem I could see would be your cornering roll stiffness all would have to come from the springs. Then at the straight ahead the thing would be overly stiff and have a horrible ride. My MCA XR's (they were one down from reds at the time I think) have pretty lets say inadequate high speed damping that you cant adjust separately. I think if it was going to be stiff enough without a front bar for good cornering, you'd have no teeth left when just going down the road if you still intended on commuting anywhere with it. Say you were to run 205-215 width R specs on the track from what Gary has said to me, the most spring you can run on those tryes is about 350lb/in at the wheel'ish. I'm around that already with 7kg/mm front springs. I'd wanted to go to 8kg springs at one stage because the front felt a bit soft on the track once I'd gone back to the standard FARB and Gary said that'd be the limit for those spec tyres. But if you take out the front bar then you loose a huge chunk of front roll stiffness that you can only regain with springs and that'll have you needing something well beyond 7-8kg/mm springs to regain that front roll stiffness. Mine is choppy as hell as it is and I wasn't game to go for the 8kg fronts. I guess it really comes down to how you'll use the car. If its going to be a track car that only has its rego to drive to the track
then why not but if you intend on still driving it everywhere I can tell you the a stock front bar + 7kg/mm on MCA's can be rough as guts and that would only get worse if you were to remove the front bar and then have to throw even stiffer springs again at it.
There was a Brazilian guy on here years and years ago who did the same experiment. He had a super track focused Gti and used to race at Interlagos. Stiff suspension etc. I cant find the before pic but this was his 'without FARB' pic. It went from being flat and planted to this without the bar. The outside front has to then be sooooooo stiff to support that corner:
Diffs - Quaife, Wavetrac, MFactory-nofarb-jpg
A compromise might be a front bar off a Polo Match or 1.4i. Never know they might be smaller than our stock one?