buddyclub n+ spring length

[jooboo]

hey guys ive got some s2000 buddyclub n+ and im looking at upgrading the springs, just wondering if the front and the rear springs are the same length??
as the rears are 65mm Inner Diameter, 7inches in length

[chargeR]

According to THIS (http://www.buddyclub.jp/j_damper/jr_spec.pdf) they are the same length. Doesn't mention diameter but I am guessing it is the same too.