Been looking into this after a couple of friends just had some internals done, results are supposed to be very very impressive, and alot cheaper than forging. It increases metal durabillity three fold, and apparently anything can be done including bearings etc, priced on the size of the parts and ammount of Liquid Nitrogen needed.
Basically it works by aligning the molecular strucutre of the metal.
I've been told that it's cheap as there is no way of gauging it yet, and its quite a new tecnology so know one really understands it 100% yet.


Only couple of people in the UK can do it, but supposed to be big in the US and racing.


May be worth a look if anybody looking to strengthen thier engine internals

 

yer ive heard of it aas well, a mates company does it . seems really interesting.