will a 305 chevy oil pan fit a chevy 350 oil pan

[truckman32]

ok,guys and gals,here is my problem i just changed the oil in my s10 it has a 350 engine block code which we all know that it is located on the bell on the driverside which reads 3970010 which the engine code inditfied it as a 1968 3970010 327 - - 2 A
1969-79 3970010 350 185 370 2 or 4 car, truck, Vette
and when i changed the oil i put a gallon of the castrol gtx which is 5 quarts that equals 4.73 liters,and on my dip stick it shows about a quart over full which the only thing i could think of is either they put a 305 oil pan on the engine before they put it in the s10 or the dipstick is to short, and my question is. will a 305 sb oil pan fit a 350 sb or are they the same sump, and how can i tell the difference between a 350 or 305 oilpan the oilpan is a factory oil pan not aftermarket, or is my chrome dipstick to short, thanks all ,,i know you all will help me on this ,,,,,,,,,,,this board is the best, :