Hey guys, looking for a suggestion.

Never swapped pickups before but im looking for something which can be detuned to drop d and drop c and not sound muddy. I mostly play in standard tuning, but I do occasionally need to drop, and maintain a clear sound. I have an epiphone Les Paul standard and I play thru a Marshall DSL 50 half stack. Im looking to achieve a sound along the lines of Thrice and Everytime I Die. Thanks.