[tronman]

Well I'm definately not a Porsche expert(only had mine for a couple of weeks so far)but I've worked on just about everything else extensively... for the charging problem...check all of the wiring connections from the generator to the regulator back to the battery. If that all looks good(and is correctly wired) try adding a ground strap(braided copper strip) from the chassis to a point on the tranny or engine...otherwise its probably a bad gen. or regulator is toast(yep they can go bad in a way that keeps from charging...just like they can go bad by overcharging...that lesson cost me a lot of money once..long, long ago).
For the fuel problem...check the diaphram in the fuel pump...and make sure the lines are clear from the tank to the pump...also I've seen fuel lines that sucked air close to the tank...wouldn't leak but acts like astraw with a hole in it...not muck fuel flow. Other than that..."not much tellin' not knowin' ".

Congrats on the engine though !!! I'll probably be having mine rebuilt sometime in the next year...ouch goes the wallet!!!