i am in the process of building a relay panel for the 408 LS1 MonteSS in the sig,car has electric fuel(A2000),water pump(Mezeire).and fan,i think i need 2 for fuel,1 for water and 1 for the fan,and another that comes with my MSD 7AL-3 box correct?and where is the best place to get these?I am being told that car stereo shops have the best 30 amp relays that i need.