Though i may retract what i said previously.
If i remember right i read some where years ago when doing my lift that the coil seat isolator that rubber thing " correct me if im wrong" there are different sizes.
If you are using the original toyota rubber isolator it is to wide for the toytec coils, because they are a smaller diameter than the original toyota coils you are replacing. So you need the correct diameter rubber isolator. If you contact toytec they should be able to help you out with that problem.
Do not install or drive the vehicle till thats resolved.
There is a thread with the answer here on the site but i like beer so browse away and you shall find.
Cheers