my 360 heads were stolen by machine shop

so i was working on setting up my springs on a 360 i recently purchase from a guy that just got back from a machine shop and low and behold i was looking at the numbers when i pulled valve covers and the machine shop took the 360 heads and put some 318 heads back in its place.. what robbery... now i have to find me a pair of affordable 360 heads as this is a budget build...... they took the 596/597 heads and put 163 heads in place..... i cant win for losing...