I bought a new 520 chain from RMATV last year when I did my 4" arm. I dont remember the exact number of links im using, but I had to break off about 4" or so to fit. Its possible the chain will be long enough with your arm, or you may need to add. My advice, get the longest one you can and break from there.
thx alot ya, i need to change it in my sig but i just bought a +14 drag swingarm from lonestar. i pretty sure this arm is going to be bad as hell. hey glamis 700, u dont have a turbo on ur quad no more?