Face it, the mk4 is a blimp! ... its SOOO high up.
what springs u got? I heard you need a 60mm drop for the mk3/4 to remove the sizable arch gaps.
try awesomeGTIstore cos im pretty sure they do them... 40mm MIGHT be ok... but unsure.
if u just wanna stiffen the rear end up, just fire sum V6 springs onto it cos im sure their stiffer.