Recommendation for Forged Pistons and Connecting Rods

Will this combination allow the use of regular gas?

The Molnar rods are longer than the stock rods.
No, they are the same length as the 198 slant 6 rods. Those are longer than the 225 rods. You'll have to call Wiseco. They used to make a dished piston, but I don't see them listed.