I'm thinking about lowing my 99 th magna and just wanted to no
when i replace the springs should i replace the struts as well ?
i'm only lowing it about 45mm or so would it still bottom out easy?

With king Lows you dont need to change sturts - but u might wana do that to improve handling.

ok thanks

If they are the original shocks, it is best to change them, as the new springs won't stop them bottoming out. Make sure to get new bump stops aswell.
King Lows and KYB shocks are a very good combo together.