335'S Cutting the wheels well, FRANK?

[bigtyme1]

OK a few last minutes things before paint. I will be putting 335's on the rear with DSE mini Tub and narrowed rear. Frank advised me to cut the upper wheel well about a 1/2 inch. Should I cut it clean or do I need to roll the lip?
I was thinking I did not need to cut anything for 335's but I want to do what ever before paint. I'm just concerned about the spot welds. How much will a rear axle really travel? Thanks Frank if you get this.