clutch mc clearance

[nate_drake]

ok so i have a s13 blacktop in a 1989 180sx which origionally had a ca in it.. i was just fitting up my isis intake mani just to see how it would fit as i was doing my head gasket... and the many runs right into the clutch mc. so i guess what i am wondering is if there are any smaller master cylinders (since mine is 20 years old and from a ca18) that i could use so i can setup my intake..

pic

http://i3.photobucket.com/albums/y65/natedrake88/DSCF3075.jpg
http://i3.photobucket.com/albums/y65/natedrake88/DSCF3074.jpg