How do these help?
Almost 2 years ago I started asking about frony suspension and still have done nothing. Back when I first asked a person replied that I should consider them.

Also if I were to purchase the CPP control arms sold on Matts Classic Bowties would this eliminate the need of the offset shafts?

The offset shafts give you more camber? adjustability, it's like starting out with shims already in. A lot of cars may also have some frame sag, it will help bring things back in line if that's the case.

To answer this question you need to know what the shims do. They are used to adjust both caster and camber. Ok, what is caster and camber?

CASTER

Caster is the angle to which the steering pivot axis (a line drawn through the upper and lower ball joints) is tilted forward or rearward from vertical, as viewed from the side.

If the pivot axis is tilted backward (that is, the top pivot is positioned farther rearward than the bottom pivot), then the caster is positive; if it's tilted forward, then the caster is negative.

This is adjusted by either adding shims to the front or rear mounting point of the upper control arm pivot shaft. If you remove shims from the front and add shims to the rear you tilt the pivot axis to the rear or you add positive caster.

CAMBER

Camber is the angle of the wheel relative to vertical (a line that passes through the center of the spindle), as viewed from the front or the rear of the car.

If the wheel leans in towards the chassis, it has negative camber; if it leans away from the car, it has positive camber.

So by adding or removing an equal number of shims on both the front and rear mounting points of the upper control arm pivot shaft you can adjust camber.

By adding shims you are adding more negative camber. By taking away shims you are adding positive camber.

SO
If you have no shims you can see that you cannot adjust the front-end alignment unless you do something so that you can play with the caster and camber angles. You can go to a frame shop and have the frame twisted so that you can add shims (twist the frame horn towards the outside of the chassis or use an offset shaft in the upper control arm to give you back some adjustment. Both do the same thing.

I hope this helps.