RE: backplate for shockwave?
Do you already have a rotostarter? you just need the back plate? If you just need the back plate with the gears here's the part number HPI87121 You can find it at [link=http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXFET1&P=7]HPI Roto Start Back Plate[/link]