Stu,
Whats your budget?
Firstly, I reccomend you get the collars welded on etc by lagwagon if your not handy with a welder/ own a welder (like us
)
Strut top:
A couple of choices here,
T3, go go exchange rate!
Cusco, i can get these direct, but they all ready are exxy direct plus the average exchange rate..
Anything secondhand from a s13/s14/s15 silvia, shop around, I spotted a couple weeks ago new s13 tops on ebay usa for $70usd plus shipping..
Threaded sleeve collars:
T3, although I wasnt a fan of alloy collars, they proved themselfs on Alex's, leighs and marks cars respectively.
Custom compact, more expensive than T3, steel collar and alloy spring retainers.
I can get these at trade as I supply the springs for these kits.
Note: the above kit uses a 2.5 inch ID spring
We use the above kit in the 1600, mainly for the fact its sort of our product.
Otomoto,
These guys do a great collar kit, its very well priced, kit also comes with spring rate of your choice, and also a tender/helper spring arrangement.
I'd recommend this Kit simply for value for money.
Noltec/whiteline,
Not sure if they are still being produced?
Shocks:
Bilstein, koni, kyb, tokico , trd.
R31 kyb excel G for a good budget insert.
1600 we went with trd yellow's to suit ae92
(alot shorter than r31)
Springs:
kings, lovells etc.