Identify Chevy make & model parts used on a street rod

I have a street rod that someone made and am trying to identify the rear end and brake parts. It has a silver tag Chevrolet on top and below it is B56j168735, the B could be an 8. It has straight 6 250.

Bill, Thanks for your patience. Please look at your numbers/letters again carefully. Also check on the axle tube, facing forward, passenger side, close to the center section for a stamped code and email it to this site so we can further help you. An example for 1955–1975 Chevrolet rear axle tubing stampings will be KC B 275 2 which decodes as follows: KC = axle ratio B= build source, B=Buick 275= day of year built= 2nd day of 1975 2=SHIFT= 2nd shift

There was no # stped on the axle. The code on the aluminum tag starts with a ‚b‘

I have some pictures of block/ head castings # as well. Also of picture of console, front end, rear end, maybe all from same car?

The car is a backyard Build, which I am making into a transmorfing into some subclass of a woody. I am trying to figure out what year and make vehicle it came out of, I need Motor mounts and some other Parts.

So far I have identified the block a 230 1965 Built in Flint Michigan Dec 7 1964. This conflicts with the info the machinist gave me that the head was a 250, so maybe someone changed the head out to something different? At least that is what the machinist told me who rebuilt it and re-ground the cam, What he didn't do is put the lump ports in which i am thinking of having done now. Always looking to add more HP/Torque. It has a 2 speed powerglide (completely rebuilt) in it. I has all new rings, pistons, valves, pushrods, and crankshaft. cylinders bored out .030 over,.010 off the block and the head was angled but I don't recall what degree. It has an Offenheimer 4BBL intake with Stovebolt headers. ( I believe this were bought from you by the previous owner) I am running what I believe to be a 600 edelbrock, to me it is mounted sideways with the edelbrock tag facing the valve cover. The story goes It was done this way as there was not enough clearance for the Linkage on the side f the carburetor. I have a 6” lift tunnel for it, will see what that does in the spring. My Issue on takeoff although it pulls right off the line, it seems like there should be some tire burning, at least chirping and more torque (machinist was guessing I would have about) .85-.9 Hp for every CC, which would put me about 215 HP.

For the Block: By the distributor is the # F1207FA

Above the starter on the block is the # CON2 on 1 tag and L34 on the other

on the head are the#'s 4886X, in one spot and 4883 15 in another.

It has a silver Chevrolet tag on the body with the # B56J168735, I have pictures if it helps of the steering wheel and center console, along with the pics of the #'s.

Any Idea’s you have on ID ing the model car this come out of would be appreciated.