68 Mustang Wheel Fitment Question

[GT500KR_Vert]

Finally bought my new wheels for my 68 Vert - Shelby Chrome CS67:

I'm running a Rod & Custom Mustang II Front Coil-over Suspension And Their 4-link Rear Coil-over suspension

Front - 18x8.5; 6.4" BS; +42 Offset
Rear - 18x9.5; 6.82" BS; +40 Offset

I'm thinking about buying
BFGoodrich g-Force T/A KDW-2
Front - 245/40ZR18"
Rear - 285/40ZR18"

So what size spacers am I going to need to make these fit?

[Damn True]

When you figure it out make sure you enter it in the wheel fitment database. The list is woefully short on Mustang data.

[Ron L]

Play here:
http://www.1010tires.com/WheelOffsetCalculator.asp

[GT500KR_Vert]

thanks

[GT500KR_Vert]

I was worried about backspacing, but they look like they fit fine as is. Plus I'm probably still going to mini-tub when the rear quarters are replaced. I'll probably have the tires on next week sometime, trying decide if I should go local or buy from the tire rack. Local is a little more money, but they mount and balance them; plus if I have to change sizes later they said they would do it. I've been getting our cars serviced at this place for years.

[LowFast]

I am considering these wheels for my falcon with the black accents. How is the quality and would you mind weighing them? BTW the rendering of your project is stunning.