You need to be aware of a few things. Making a methylated steroid injectible does not significantly alter its liver damaging effects. It will still pass through the liver causing damage. The only possible benefit is a higher bioavailability and longer half life. Both are negligible though as methylation is designed to make it bioavailable and the half life would only be extended by a couple hours at best.
Anavar is probably the worst one to use. The compound itself is incredibly tough to dissolve/hold in suspension. This means that at any reasonable concentration 40-50mg/ml, the manufacturer is going to have to use a shitload of solvent. This is going to mean tremendouse pain, not to mention the paion when the no ester compound immediately crystallizes in the muscle.
Anadrol is similar, though not quite as bad. Dbol can be suspended with very little solvent, but the subsequent crystallization still produces days of soreness.
In the big picture, iInjectible orals are gimmicks and will provide only negatives over taking them orally.