Reducing Vehicle Weight - Maintain Rear Wheel Weight

[67TXStang]

I'm curious and hope someone can point me in the direction to learn more on managing vehicle weight.

I've often heard reducing the weight of a vehicle is one of the easiest and cheapest ways to increase vehicle performance. When I hear this, I start to think about items which could be easily removed from my '67 Mustang.

There are things which come to mind which are at the rear of the vehicle... spare tire, full fuel tank, etc. As often as I hear about reducing vehicle weight, I hear about weight over the rear wheels of a rear wheel vehicle allowing for greater traction. My car is currently front heavy which makes it seem like removing items from the rear of the car would make things worse.

Is it more important to just work on reaching a 50/50 weight distribution rather than just overall vehicle weight?