
To mount Escor RS2000 wheels to Cortina Front Hubs and MK2 Escort Rear Axle will i require new studs?
Are you talking 1970-80 Rs or the 90's one?
The Mk1/2 RS wheels need special nuts and collars
the Mk5/6 Escort RS2000 wheels are front wheel drive offset and so aren't really suitable.
cheers
Chris 
Im talking MK2 RS2000 sorry.
They will bolt straight on. Check nuts though, RS wheels used a sleeve nut and flat washer, Capri wheels used taper seats. These were often used to replace RS wheels, so make sure you know what you've got.
Yeah i brought a Capri wheel last year that was incorrectly advertised on Ebay.
I was credited for the mistake, just had to keep the wheel and pay the carriage, so £12 wasnt that bad after all, just will use it as spare.