Fusion of two deigns, I have yet to have my friend CNC this for me, however I thought some might find this useful to print off for use in ABS or PLA.

I'd recommend ABS but PLA could work too perhaps I guess as I've been reading many users using PLA for their hotend holders.

Should print out fine the way it's currently oriented.

http://www.thingiverse.com/thing:1362169

TEVO Tarantula Modular X-carriage - BETA
by msquared2015, published Feb 23, 2016

Dual J-Head Extruder Mount
by dbenoy, published Oct 5, 2014

http://www.thingiverse.com/thing:488940