These are my options Im wondering if the stock settings on these carbs would run a 2.3L

Will the 5200, single barrel ranger carb and 390cfm holley be ok for a 2.3L with racing cam and headers

Im thinking of using a re-maned 5200 with stock manifold to run my 2.3L

Also Ive got this 390cfm holley from an old guy I found out that they are very rare and made just for 4 cylinders but this carb is missing way to much parts

Hi,  if I may toss this out there.   Wouldn't a well tuned and well responsive carb be better and then adjusting the jets to the performance you are needing?  I would go with a carb that is in good/great condition and revamp it to make it be as you need it. here are a couple ideas to read through and to give you a bit of an idea.  (i haven't been able to do this with my build yet for I haven't had the car on the road to check for responces with the motor yet, however will be needing to rejet? maybe)

hope this helps to steer you into the right decisions.

http://wecrashtoo.proboards.com/index.cgi?board=build&action=display&thread=430

http://www.ehow.com/how_7668228_understand-carburetor-jet-sizing.html

Pinto5.0, Where did you get that NOS carb $62? Do they have more for that price??