OK. I'm kinda at a crossroads here. I'm in the process of getting my big block all up and running. The last variable I've not figured out is fuel delivery. My truck was TBI. I've searched and can't really find a definitive answer on the best way to go. Ideally I'd get the MPFI kit from holley but I don't happen to have 2600 bucks laying around. Is there a fuel pressure regulator out there that will allow me to keep the current pump and feed my healthy carb'd motor? I know I would need one with a return line but will it flow enough fuel? How much of a PITA is it to swap out the TBI pump and go with a holley black pump on the frame rail? Lastly, should I look into swapping in a 454 TBI setup and get a chip burned? Is a 454 TBI even up to the task of feeding a motor laying down 800hp? Thanks guys as always.