i have a 1999 Dyna does anybody know  what original swing arm i can fit in that will be lighter and a bit longer , someone mentioned about a FLT or roadking , iam not real sure . its just for dragracing only bike is a stat write off never be on da road again , but if i use a aftermarket swing arm da bike wont be classed as Harley stock anymore and have to have it tech inspected every year , Harley swing arm only   cheers Bob any help would be great