Invest in a decentish 1/2 inch drive and breaker bar
3/8 is for mechanno sets. No, 3/8 is ok for most things but strut to hub aseembly bolts etc and head bolts require a 1/2 inch and decent braker bar. I was using a 1/2 to 3/8 convertor on a head bolt and sheared the convertor straight away!
I have seen sidchrome at supercheap for pretty cheap about 200 se t. You may do better...