I was wondering if it makes a big difference using the n/a clutch pedal box without the booster servo,

if it does make the pedal a lot heavier then is the n/a pedal box able to accomodate the booster servo later on or is it a totally different pedal box, cos looking at workshop book it doesn't seem to much difference apart from clutch master cyl has a push rod, and pedal box has been spacered out

Thats gonna be one heavy clutch pedal!!! If you wanna know what it'll feel like, pump the clutch a few times on a TT with the engine off. The stored vacuum will eventually run out and you'll have no booster - DAMN HEAVY!!!!! Even on a stock clutch.

It won't be driveable without a booster.

I tried mine without because I had some pipes missing for a week or 2 after the conversion and it was ridiculous.

I could only just press the pedal to the floor with all my strength whilst pulling on the steering wheel and the clutch was either on or off.

Impossible for hill starts.

is it only relevant to the twin turbo clutch being heavier as the n/a doesn't need it ?

 

would it make a difference with the pedal box from a n/a versus the pedal box without booster working of a TT

All down to the clutch pressure plate... Unless you're using a NA clutch, forget it...