47-55.1 C4 Vette sub frame & running 4 of the same wheel?

[dsraven]

How does your desired tire outside diameter compare to the original tire diameter that came on the IFS you are using. Keeping that diameter along with an original donor IFS offset would keep alignment as intended. Changes to that will, of course, change how the alignment will need to be set up to keep it driving straight down the road. An alignment tech who knows his stuff would be an asset. The normal corner garage alignment shop would possibly not have a clue what to do for specs because it wouldnt come up in thedata base.