I am lowering my is350 on BC coilovers, looking to eliminate wheel gap or slightly tuck tire. What would you guys recommend in order to get my alignment set properly? (Camber kits, toe arms, etc.)

 

a good alignment guy is all you need

 

Im tucking tire all around on 20s and dont have any camber kits or toe arms. I have -1.5 camber up front and -2.5 in the rear, nothing crazy.

Just go to a good alignment shop and have your toe set as close to 0 as possible.

 

OP, how would you define "set properly"? Could mean various things. Options :

1) Return to factory specs...need rear camber arms and at least SPC ball joints up front.
2) Zero out toe as much as possible with factory adjustments, and live with the additional negative camber front and rear. Like what was said above, you'll have from anywhere from 1.5 to 2.3 up front and 2 to 2.8 degrees in the rear...just depends on how low you lower the car.
3) Roll-on without any alignment post installation...definitely not recommended.