Andy that kit isnt with the 4g64 block matey, its with the 4g63 block that you have in your car!!
The 4g64 block is used for a 2.1 destroked engine or a 2.6 tall block stroker. So if i were you, i would seriously give huss a call and get a kit ordered, sell those pistons that i got you cause they are mint, and just get it all together!
Chris.