well theres a difference between adjustable springs and adjustable shocks
these are shocks
these are adjustable springs
generally the adjustable springs are called coilovers...the ones I showed are coilover sleeves...where true coilovers are shocks that have threads on the outter casing for a very nice combo
ala these
If you spend enough money, theyre very very very good...just NEVER chince out on suspension...trust me...Oh...and DO NOT get tokico illumina r coilovers...theyre crap and have no warranty so if they blow...youre screwed...like me...sons of bitches...