There are a few factors you will need to consider. If you would like to go Carb. First, You will need to replace the manifold. Second, you will need a good quality Fuel Pressure Regulator because your in tank fuel pump flows too much PSI. You will need to regulate it down to about 6 PSI. The only problem with doing this is that you will burn up the pump in the tank in a short period of time becasue your not returning equal PSI through the return and you will eventaually go mechanical. If you want to replace the fuel pump with a mechanical pump, you will need to change your cam to allow a fuel pump rod lobe and shaft to pump the mechanical pump. If you go mechanical you CAN use the existing fuel lines and you do not need to drop the tank. the mechanical pump can suck the gas through the electric pump with no problems.
Regulated
Un Regulated