You will never get the HP you are looking for with that fuel system. You will have to go after market for an entire new fuel system. Dual pumps, new tank or modified tank. Your ECU won't like those 60# injectors either. You will be paying serious cash for a tune as well. just so you have an idea what your looking at. Honestly, htere is no such thing as a safe 550-650rwhp. You will be breaking crap all over the place. Be more conservative and look 400-500. I'm going done this road right now and have most of the crap you are talking about and it is not as easy as it sounds. A lot of things do not go well together and it takes time and cash to work the bugs out. I have a forged 306 with a KB 1.7 to install and I am still amassing parts. You are missing the billet oil pump gears which are a neccessity are the power you are looking for. You will need cams and better flowing heads as well. It is a lot of work and cash. trust me.