Well getting Recaro this far was a job since the NSX-R seat is licensed to Honda, the shell is pretty much out of the question.
That being said, NSX-R seats can sit quite tight, they are narrower than PP ABE or FIA shells as they are desigend for Japan.
When you install a genuine NSX-R seat in a euro/usa made rail you'll even need spacers, visa-versa a TaiTec and RFY JDM rail doesn't fit a euro/usa spec Recaro well and would need widening.
For those of us that are perhaps not as athletic the Pole Postition ABE is by far the best choice