Is the delrin material blocks all they are cracked up to be? I am watching a set on ebay and there are so many material types im not sure what to go with. They all come with the stud extender... Is that a safe thing to install? should i look for a longer level 10 bolt to replace it? i dont want to spend an arm and a leg for it but if thats what i gotta do then so be it.

 

Delrin is essentially invinciplastic. Rear blocks are under mainly compression loads so I don't see a major problem if you had plastic blocks, it would reduce sprung weight.

 

I work with and machine alot of delrin and while I know its a great material I wouldnt be replacing any steel suspension component like a lift block with it on my truck.

 

it is the front lift block. adding it in under the coil springs. not replacing anything. its either aluminium, delrin, or that other composite plastic.