Seat Mountings

[StuartA]

Hi, I am fitting bucket seats and new subframes to my mk1, on the existing seats the bracket that mounts onto the cross member the bolts are blind, I could drill these out but before I do does anyone know if I can buy 4 new ones, Mini Spares only have the letter brackets from 64 onwards - mine is a 63' and On the Somerford site they are discontinued. Any help with this would be greatly appreciated. Thanks SA