well am also running two 306c with f2000 amp if u want not to dim da lights change ur car genrator 80ampere ka ya 100 amp ka mitsubishi ka genrator lagwo and 60-70amp ki battery rakhwao or apni wires jitni thick use kersakte ho amp ki supply ke liye karo u donot need a capicitor
i have paced a 80 ampere battery only for f2000 on my rear seat it totally rocks
i hope u will not be hopeless