sportex golf mk1 gti exhaust !

Sportex backbox for a golf mk1 gti 1800cc, May fit cabrio and 1600cc but not sure. Removed it from my car when i sold it as the guy wanted to keep it original. Was only a few months old. I paid over 100. Single 3" round tailpipe design Direct Fit Golf mk1 GTI 1975-1984 Cash only on collection, thanks