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Originally Posted by Panoz Paul
Thanks... I'm not sure if I want to dive into the heads ... Does any one have a insight to the performance of the parts combo that Santa brought me ??? If I go for a carb / manafold ; can you guys give me a manufacture for the manifold & carb size ... Other associated question w/ the carb approuch ,does the cars computer need to be re-mapped & do i need a tool box full of jets to run in 40 to 110 degrees w/ all ranges of relative humidity... Speaking of weight , I 've heard the PI system should be replaced w/ analoge gauges , not using the tracking / data collection feature & would rather glance at my engin stats ... 
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Cant comment on injection output, I will leave that to those with more experience with the injected combo.
Regards a carb and manifold combo, if you are going to use in the 2500 - 6500 rpm rev range as I suspect you will want to, then an Edelbrock Performer RPM (or similar) and a 600 - 650 cfm carb is probably about right. You will not need the computer anymore and you will need to change out your distributor.
Your engine will have around 220 - 230 hp now, changing to new manifold and carb will probably get you up to around 260 - 270 hp, maybe a little more. The heads & cam are where the power is really made. By stretching your budget to a set of aluminium heads and a cam with more duration/lift, you will get up above 350hp.
I have just been through this exercise. Key engine parts cost was around USD$2,775. You can spend a bunch more on super dooper parts if you choose to but you probably wont get much under this figure using reasonable quality gear. Engine made 400hp/390 torque at the flywheel on the stock bottom end.
PI system Vs analogue is really a matter of personal choice, if you have the alert parameters set correctly on the PI unit, it will flash and warn you of any over temps or pressure issues. Just a matter of getting used to this type of system or ditching it if uncomfortable with not being able to scan all different parameters at the same time.