7.4 L Fuel Injector Size

I am trying to replace my fuel injectors on my 96 7.4 Liter Big Block Vortec. Unfortunately for me, I cannot find any spec's for the oem injectors so I can buy one of the aftermarket or even bump the size. All I can find are remanufactured (YUCK!) or brand new from the local parts house ($700-800). Everyone has an injector listed for the small block's but nothing on the big block.

Looks like a standard Lucas Style Injector but I can't find the flow rate for the stock engine and the aftermarket injectors run $250-400.

Anyone know the spec's on the oem injectors?