15 x 10 mag alloys for skyline gtr needed

[www.japcar4u.com]

help ! i need some 15 by 10 magnesium alloys with 114.3mm between the bolt holes.can anyone help? this is for my r32 gtr skyline which i'am hoping for a 9.5 sec 1/4 this year, with the help of over 1000 bhp,nos,sequential box,four plate clutch,etc.