Gidday all

I am looking for some feedback regarding some changes i would like to make to my bikes front end. I really like the look of the front end of a bike that i have seen on ebay and i would like to make mine the same. i will put some pictures up of both bikes so you know what i am on about. Firstly on my bike the blinkers are integrated into the clutch and brake levers and i want to replace them with normal blinkers and levers. The front wheel is a 19" and i would like to put a 21" on it and perhaps lower it one inch. I guess that i would need 2" shorter tubes to make this work. I have seen some parts on ebay that might be able to be used but i am not sure on some fitments for example     I have a twin disc front end can i use a single disc if i use all the levers and master cylinder from say a 93 softail becuase they have the bigger front wheels      Will later model handelbar switches work on older bikes. cheers   ps my bike is the blue one