You're outta luck.
With a bigblock, you'll have extra weight to deal with, on an already noseheavy car. If you modify the suspension for dragracing (light springs) you'll have a real tough time driving any corner fast. If you do stiff springs to support the car, you'll do ok, but no canyon-carver...
Decide on what you wanna build, then make a plan, and design the whole car to that plan. Dont peicemeal parts of the car for multi-designs, you'll end up unhappy.