Z'd frame core support clearance

[L&L70]

Hello,
I cut my Z on an angle to push forward and inch while going up 3". Looking at my assembled truck in the drive way, it looks like I will have some interference between either the radiator or core support when I drop the frame horns down and back. The frame horns will actually be going down 3.75" cause of my body drop. What issues have you guys had when doing this. The truck I looked at is a 70 with manual steering and the chassis being worked on is a 71 with manual steering. Also is there a difference in size if I later go to power steering? Thanks

Matt