I hope I didn't buy the wrong Engine for the volcano I bought [link=http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXGGP7&P=ML]http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXGGP7&P=ML [/link] but I heard the one that fits is [link=http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXGGP8&P=ML]http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXGGP8&P=ML[/link]let me know if the one I bought is the right one Thanks