//shiftOutX(byte _latchPin, byte _dataPin, byte _clockPin, byte _bitOrder, byte _NofRegisters);
shiftOutX regGroupOne(8, 11, 12, MSBFIRST, 4);
//yes you can attach more daisy chained registers just use
//a diferent latchPin number so you can actually add another
//four registers and only take up another pin from the 
//Arduino just declare another instance for example
//regGroupTwo and use the same dataPin and clockPin.
//you can use two groups of eight for a total of 128 outputs