You must check the offsets on Amy's wheels before you buy though ..... if the offsets aren't right you'll end up spending another £200.00 on spacers to get the right stance
There is an oil seal in the cam cover (one for each plug)
These oil seals are not available on there own as they are part of the cover.
Alex.
What symptoms say that these seals are gone Alex ? I'm using (burning ?) a bit more oil recently
265 would need a 9" rim
255 18 45 would give a 1.33% difference
any change at the rear may need to be compensated by a change at the front so as not to affect the lsd
Check here
http://www.alloywheels.com/tyrecalc.asp