spec c spring help
 

hello all , i've just become the owner of an 03 plate spec c subaru

i'm in the middle of getting it ready for use on the track this year
what i'm having problems with is , i've got h&r coil springs to go on the standard shocks , fitted the fronts fine , i've come to fit the rear springs and they are wrong ????
the standard spring is the same diameter top & bottom , where the h&r spring is a smaller diameter at one end !!!!!
has any one else come across this , is the spec c rear shock different to an sti type uk for example ??
here is a link to the springs i've got ( did not get them from firm in the link )
http://www.dcperformance.co.uk/uprat...u/impreza.html
the kit is number 29356-2 any help i can pass on to the supplier when i ring them tomorrow will be of great help
thanks

i have found out that a type uk has a smaller diameter top mount than a spec c !!!! that why the spring is smaller at one end, any one know where i can get them from appart from suabru
thanks