Got the Evil(chromoly)mainly because of cost,got it and the chain guard in matte black along with shock and pivot bearings for $660 shipped.I know Chris has one about 10" over on his 1507/flat slick bike with around 250 passes(runs around 8.10's)with no issues so I should be good.Ordered the 47T rear because with that 200/55 tire it actually cost me about 1.5 teeth of gear(according to Gearing Commander)so actually less that stock.With the 18/47 should be more like 18/45 with a 190/50 tire which is only 2 more than stock,and only maybe an extra 3-400 rpms at highway cruising speeds(need it to get my fat 245 lb. ass moving
).If I ever go back to a 190/50 tire I'll switch back to a 44-45T sprocket.Another turbo is out of reach for a while,just the arm/chain/sprocket set me back a $1,000 today so I'm tapped out.