I bought a set of Neuspeed Sport Springs off Groupbuycenter for my 97 Type SH but received part no. 50.20.16 (92-96 prelude)

!?!? I contacted the vendor and he sent me a .pdf file that states that the 50.20.16 will fit 92-97 preludes. His own groupbuy website states that I need part no. 50.20.22 (97-up prelude). So then I called Neuspeed and they said that the 50.20.16's will fit my 97. So I guess my question is for those of you running neuspeed sport springs on your 5th gen (preferably 97's), what is the part number? Also, I thought that the 97-up preludes were heavier than the 92-96 preludes, so wouldn't these springs lower my 97 more since it weighs more?
Thanks