Lunger,
You said extendable link arms, but did you mean the Telescopic Stabilizers?
Thebowman gave you prices for the stabilizers, and Ronjhall gave you info on the extendable links, from what I can see.
You can see that the conversion to the complete
B2910 set up is very expensive, because you would need to order both sets of parts.
Although you said extendable link arms in you post, when you said the turn buckles on your 7800 were shot, I thought you were really wanting the stabilizers.
Which are you looking for? Pretty expensive for the whole setup, isn't it?
The cost of the parts sure shocked me when I was wondering if I could adapt the longer extendable arms to my BX. Yes I know doing so would reduce the lift capacity of my bx's 3PH, but I really wold like to use my Rhino HPHD PHD on the BX and that looks impossible without longer lower arms... /forums/images/graemlins/frown.gif