Make sure you have a chip that is supplying enough fuel. If you're trying to use a 93 chip with those 42's, it won't be programmed with enough duty cycle for high boost.
If you're changing injectors, the 60's will be plenty for a te63.
Start with what your goal is. What mph do you want to achieve in the 1/4? Then we can calculate what HP you'll need, and what fuel you'll need.
Regards,
Eric