741 Housing, 742 ring and pinion..... can it be done?

Don't get me wrong I would love for someone to find a way to install a 742/489 ring and pinion in 741.
there is only 3.55 and 3.7X gear ratio left out there......and it won't belong before they're is nothing available :(

Here is were i tried to do some research
Components for Tapered Roller Bearings (Inch and J Series) On NTN Bearing Corp. of America