Bump Steer

[chevykevy]

I'm a new member to the site and have been reading nearly all of the posted tech questions. i was reading a thread about power steering conversion on a 68, which coincidentally I have as well. I am planning on spacing a gear box from my frame the suggested 1/2 inch with some type of spacer and was wondering how tp maintain proper bump steer. Is bump steer the equal amount of travel in both the left and right turning directions? I'm obviously new to the truck rebuilding stuff.

Thanks,

ChevyKevy
Yellowstone N.P
68 Chevy LWB project

P.S Does anyone have a throttle rod from the firewall to the carburetor from a 69 or 70. I am looking for one with a longer section of rod after the 90 degree bend toward the carburetor to clear the kickdown bracket.