Uggh, the gas pedal in my 94 is real stiff compared to the fox. The stiff one drives me nuts (I keep thinking the floor mat or something is jammed underneath. And let's not read too much into that last sentence about stiffness and nuts).
A stiff pedal can be nice for heel/toeing, but I think you just get used to what you have (I'm used to the fox's easy pedal, for instance).
I think the other guys are right about the TB bell spring.