Shocks do not determine ride height, rather the springs do, as you correctly say if wanting to raise the ride height you need different springs perferably standard ride height in my opinion as these cars are low enough as it is, lowering by to much actually does more harm than good.

The Leda (AB) springs are around 10MM-15MM lower AKAIK and the Avo's are avaliable in standard ride height spec which as the name suggests is as near as makes no difference the same as standard ride height.

The Konis however are adjustable and so you can adjust how hard the suspension is.

These would fit on any shock make it's just they work well with Konis.

Martin