nos veterans help plz

i have a valiant with a 408 considering on running a 100 shot max on it..i know everyone suggests to run electric fuel pump but i have a hi flo carter mech fuel pump..i ant to know who has run 100 shot or more with the mech pump..and any issues?i dot want to do a stand alon but i will if i have to but just want to see some rebels like me who dont have cash to thro away ...thanks moparts