Probably, a bit depends on the thermal dissipation of the heatsink, but if you match the wattage, or even go above by a bit, it should be fine. The newer COBs are more efficient, meaning less heat so you should be able to get away with pushing ti a bit. Unless you run them way hot, all that will happen is you will probably reduce their life span… Which will be far more time than you will likely use them for anyway before you upgrade. Honestly I have run COB’s on CPU heat sinks with a failed fan for months without them failing.
You will also need to re-drill the mounting holes.
Driver wise, it’s less certain and depends on the forward voltage of the COB’s you have vs any new ones you replace them with. Check the driver to see what kind of voltage and amps it outputs.
if you can’t find this info, you might find some info on the chip itself as to what it is so you can look the specs up on google. What you want to know is what the forward voltage is i.e. how many volts are required to fire the COB up, and what the Amperage is. Then you can probably go shopping for cobs that are compatible with your driver.
Stringing them together isn’t rocket science, it’s a bit like pulling apart a PC, one you have done it once, it’s easy.
