I was running 17x12 on all 4 corners with 335 Ecstas, but the car was extremely loose under power. I was hoping to run this combo to maximize tire wear, but it just wasn't working. I didn't like the 335's up front, to tall, and to mushy, it wasn't very good in slow corner. So we are currently changing to what is mentioned above. We are staying with the 17x12 front rims, but going to 315 Victoracers, and staying with the 335's in the rear, but going back to the 17x13.
The 11.5's you have for the front would be great for this combo as well, but I believe the 335 Escta will be to narrow for the 14" wide rear. So you have 2 choices: 1) stretch a Hoosier over that rim, which is shorter and wider than the Ecsta or 2) Call John and get 13" rim halves and run the Ecstas on the rear. Personally, I like option 2, Kumho's are a much better all around tire. Just think of this, what would you rather be on when it starts to pour, treaded Kumho's, or slick Hoosiers? Kumho's are great for big heavy powerful cars. The ASP/SM2 SoloII national championship car that runs out here has always been on Kumho's, the 315/335 combo now, and it is lightning fast. Plus, they are cheaper, and wear longer

I bet with the difference in price between the Kumho's and the Hoosiers, you could buy the rim halves from John at CCW, I bet he would even work some kind of trade for your current halves.
Good luck.
Jeff
Going racing this weekend