stock torque converter
 

Im replacing the stock converter and i need to know what the "torque converter bolt circle" is and whats the diameter in inches.

summitracing has the options of

11.400 in. and 10.750 for the bolt circle

10 in. and 12 in. diameters

what should i buy that will bolt up to the stock?

yours should be the larger size, if it does turn-out tobe wrong, we can always adjust and get a different flywheel to fit the convertor.
there only about $40.00 or so