I can either get these: http://www.minispare....aspx?pid=34995
Or just standard replacements: http://www.minispare....aspx?pid=36397
If I'm going to the hassle of replacing them, I might as well get the heavy duty ones right?

Also, if I'm doing both sides then do I need two sets of these? http://www.minispare....aspx?pid=37257
Do I need to get any extra bolts/washers/etc before I go ahead and order? Don't want to get halfway through the job then find I can't reattach the bars!
Cheers