please don't take this wrong
but what is the purpose?
a r1 is only about 15 lbs more.
that might be the difference in engines alone
and Ive seen some sweeet r1's for only a little less than r6's
selling one to buy the other would be a lot cheaper than going into your own Mfg
thats why I went to 900rr's they weight less than the 600's