Thanks again MJ
Okay, did a little more fishing into this and found out the following information, this may be handy for anyone else considering to replace their Discs.
The dimensions below (in mm) are for a 1999 Gen1 Coupe (F2 Evo) and are based on EBC Turbo Front Discs:
Front Discs (Turbo Groove) - P/N: GD563
(Diameter=257,Hub Diameter=137,Height(Total)=34,Thickness(Disc)=22,Hub Hole Diameter=86)
or
P/N: GD1018
(Diameter=257,Hub Diameter=152,Height(Total)=46,Thickness(Disc)=24,Hub Hole Diameter=69)
Will have to get my tape measure out and do some measuring
One pint of Coke on order for MJ (put it on my tab barman
)