Thanks Swath, that clears up the crystals not being compatible! I have no will power I am goiing to order one these beast, I have a bunch of parts to convert to Hend Long, and it looks like the Pershing gear box will fit! I am still curious about using the motorro ESC board with the HL reciever board to retain new sound or maybe the little sound chip has the same pin out I could just swap that??

Thanks Calvinlo from your measurement at least width wise the Pershing gear box will fit!

The Blitz