EPCOS RM8 inductor cores for pultec PEQ and MEQ project?

if i can get some of the correct cores i'd like to wind my own cores for this project.
the correct core is
EPCOS RM8  N41
1600nH
manufacturers ordering code: B65811J1600K041

i find some simila,r but not these cores.  i see them for sale wholesale from distributors but no retail.
some members must know where to get them as the PCB was laid out for these particular cores. does anyone know where i can get them shipped in/or to USA?
thanks
chris v

RS carry them part no 231-8741