Just want to make sure before I spend the money.

The fronts are 17x7 with a 43 offset
The rears are 17x8 with a 42 offset

With a 225/50/17 up front
245/50/17 rears

I do not want to roll fenders and I am on stock suspension.

 

Your tire sizes are off. If you do try to run 225's up front, they should be 225/45-17, not 225/50, and for 245's in back they should be 245/40-17, not 245/50.

But with those offsets, the widths you want to run are iffy. Safer bet would be 205/50-17 front and 225/45-17 rear.

From the stickie above:

Based on successes and failures from many S2000 owners, we can use an offset calculator to figure out what other offsets and tires will work. These are minimum recommended offsets. You can use a higher offset if you want, and you will get additional fender clearance.

For the front:
205 tires: +43 offset minimum (6.5

 

They will fit on stock suspension, but run 45/40 instead with 215/245.

 

I would say stay wityh 205/50R17 and 225/45R17 if you are not willing to roll the fender lips. Depending on the alignment and the specific tire the 245/40R17 can rub.
If I can help let me know.