Im using the EXC-800 Portable 800W Recirculating Liquid Chiller, performance is awesome on my 9960X just need to maintain dewpoint. it is smaller than my desktop. Im sure it can be modded into the base of a large ATX chassis
Wait for the warranty to expire before lapping, deliding. You may be better off selling your chip and buying another to bin for lower temps lower voltage and lower temp (Better IHS contact)