I want to remove rust from under the car, so I wanted to remove the suspension, I did manage to get most bolts off with a breaker bar and a cheater bar, but there was two bolts that connects the control arm to the wheel hub assembly that are under the vehicle, giving me little to no leverage to break the bolt off. Also I am scared to not strip the bolts.

I did found an impact gun, electric and wired, 450 nm from yato, there s also a stronger version with 600 nm. Do you think it s worth investing in one? Will it have enough power to break lose rusted bolts? (assisted by heat and wd 40). I thought about an pneumatic gun but it s twice the price plus regular mantainance on it. (I rarely work on the car). Thank you for your help