i have a 01' RS using a 20mm WRX RSB and bushing. im wondering if it helps if i changed my endlinks to the WRX ones or r they the same? i assume they're different since my stock one is only 13mm compare to the 20mm WRX ones. i know i should go with the aftermarket ones but since my cousin has his stock one laying in his garage so i thought i'd try.

 

is it exactly the same or just dont make too much of a difference?

reason asking is because im not planning to spend $100 on endlinks any time soon, so if they're really the same then i dont wanna bother spend time changing them. other wise i wanna put on the endlinks thats suppose to go with the 20mm SB.