Guys, i want to print a 1.75mm filament extruder for my i2.

Guys, i want to print a 1.75mm filament extruder for my i2. Now im using wades hinged, but want to build a direct drive one (i have 2 mini hienas laying around). Hotend can be a jhead or arcol.
Any suggestion?

http://www.thingiverse.com/thing:42495 looks like a decent one, but I can’t vouch for it.