I have been offered a front set of new 4 pot calipers ,disks and pads which are on the spec of a my 99 for £400. Can anyone tell me if this is a reasonable price and if there will be better braking performance compared to my 2 pot calipers and smaller disks on a my 97

I believe they can be picked up second hand for £250 - 300 but a lot depends on condidtion.

Have a look in the Privates section

i sold mine off my p1 for £250 with 1900 miles on them
mark

£250-£300 we are talking set of NEW full front bracking system here,surley you could not pick up a set of calipers and pad for that price let alone the disks aswell

Keep an eye on parts for sale mate! - you might get a pleasant surprise :D