Front Pump Bushing Question

There are 3 types of bushings used in the 727 / A518, A618 and the 48RE. They'll all fit, and unless they came from China or the far east somewhere they are usually made by Clevite.
A breakdown for you:
727: 1962 - on Babbit material
1962 - on Bronze
A518/618/48RE: 1990-on Either babbit material or like yours dimpled bronze.

Most rebuilders I know prefer the stock 727 babbit bushing vs the bronze, as they say the bronze bushing is hard on the converter hub and will cause premature wear on it.
However, when the dimpled bronze bushing came out, there was a swing to the use of that bushing. Some claim it provided better lubrication in that area.
I should point out that converter hubs today are made of a better quality material ( I believe flame hardened is buzz phrase) so the bronze bushing may no longer be an issue.

Make damn sure the bushing is installed correctly (straight in the pump housing) or you'll have an issue for sure. If you've got a friendly transmission shop locally take the pump and the bushing to them and see if they can press it in for you using a bushing driver.

Have a very close look at the pump hub. It should look like the journals on a crankshaft, nice and smooth with no nicks or any indication of wear at either where the pump seal of the bushing rides on the hub.