hi all could i use sierra uprights on the front of a rt or do i have to use cortina ones as it says on mnr's website,thanks.
lewis.

sierra uprights are totally different geometry to the cortina ones so if youve got wishbones designed for the cortina uprights you will have far too much possitive camber.

believe me, ive found out the hard way

You have three choices with the current Vortx RT - Use cortina uprights, MNR fabricated steel ones or lightweight raceleda items

ok cheers guys if i decide to go down the mnr route(my first choice) then i shall not bother refurbing my sierra ones,i presume discs and calipers are also different

Yes thats correct