how much do you think you cut out of the firewall. I really was regretting that on mine haha I honestly knew that I was giong to tubb it so I just beat it with a 12lb sledge when I put 4ds on it but with the 42s I only moved the axle another 2"s forwards so ill have to tubb it for sure. I just think I might have to go further like all teh way into the body mount