Brake booster / brake servo retrofitting

[NC427]

I am wondering if anyone had the same experience: Test driving a Kirkham is highly recommendable - especially as I did, prior to the test drive, expect that the Kirkham would act like a car from the 60´s - This was not the case!!

A throughout positive experience which will for sure end up in a Kirkham for me........and USD for.........

However either the originals (never had the chance to pilot one myself) where lightyears ahead of their time in regard to suspension or Kirkham did another incrediable job (perhaps a combination out of the two is the truth).

The "left open things" I am wondering about are:

1) Did enjoy the test drive in a car which had the billet suspension.
I am tempted to opt for the classical suspension with the Girling brakes
and do now wonder if somebody here did have the chance to drive both
suspension styles and give me some advice whether there are any diff-
erences (I realized the key "USD one" when adding the Kirkham options) in
handling / brakes in real life (no track - but rapid/sportive driving)

2) Brakes: Being spoiled by the brakeing power and performance of my actual
Cobra I am wondering if anyone did retrofit a brake booster to his Kirkham
and how the modifications where carried out (parts / mounting place)
Do not get me wrong: The car brakes nicely but I the wimp in me would
prefer a booster supported system.

3) Should a booster supported system not be inviteable: Did anyone upgrade
the Girling system? If so: How and what was the rough cost for it?

I shall be thankful for your suggestions!

Carsten