05 gt wheel specs (stocks)

[red05v6stang]

im looking at buying stock gt wheels for a project of mine but need to know the offset that they are. its not a mustang so i have no clue if they fit. i found a set i would like to buy just need to know the numbers. im guessing its a high positive offset?

 

[kooldawg6]

Bolt pattern 5 x 4.5 inch (5x114.3mm)

17x8 Bullitt 6.295" backspacing +45mm offset
18x8.5 Fanblade 6.87" backspacing +50mm offset
18x8.5 Bullitt 6.82" backspacing +50mm offset

I can't find the specs for this 17x8 wheel

 

[DarkFireGT]

The concept wheels (pictured above) are +45MM also, from what I've read.