1999 Denali

I am swapping the TBI 350 for a 450 hp 350 and am wondering if the fuel pump will work on a carbed motor if not can I cut the power to it and will the in tank free flow to be able to use an aftermarket frame mounted electric fuel pump.

2nd My ABS light has come on and when it did the brake pulsated as if i was appling the brake hard enough to cause the ABS to work which I wasn't anyone have a cue why this hapened. thanks =Bill