I Steve I have posted this before in other threads, regarding fitting racks to suspension units I have use the old man mountain racks as most suspension units don't have V brake fittings I have used P clamps with no problems. the dealership in the UK for them is here
http://www.carradice.co.uk.
For some years now I have always sourced cycle part to make up my bike to my spec.
I made my Mountain bike up to so suit my own requirements for pottering around on the trails and byways and also for touring:
Charge Duster 2010 frame, (has bigger diameter tubes than the Duster 2011 frame)
RockShox Recon Silver TK Solo Air 100mm Suspension Fork
Hope Tech X2 Disc Brake front and rear.
Truvativ Noir XC 3.3 Team Triple Chainset.( got it for £90 so could not miss such a good bargain)
Shimano XT M770 Derailleur and leavers front and rear..
Race Face Evolve MTB Handlebar
Charge Spoon saddle
Mavic Crossride XC717 front wheeL
Halo SAS Pro 26 Inch Rear Mtb Wheel (heavy wheel but great for when I am touring off road fully laden)
Old man mountain Sherpa racks on the front and rear.
Current tyres are Schwalbe Marathon XR's for touring otherwise when not set up for touring: I use Panaracer Fire XC Pro's