The Saab 900 Minilite copies are 4x4.5 bolt pattern, so it's the right BP, MGBs guys lik to use these, in fact I bought a MGB GT race car roller recnetly and it has thse wheels mounted on it, so if MGB use them the offset for the TRs will be too much postive offset, for example the 15x6 VTO wheels use a +24mm offset (4.5' of backspacing) for the MGBs and +3mm (3.58" of backspacing) for the big TRs.