Will a 904 tranny fit behind a 360?

Greetings, I am installing a 360 from a 1978 Ram Charger into a 47 Dodge pickup. Installed a K-frame from a F-body in the 47. Replaced the stock 4:88 rearend with an 8.75 from a 1964 B-Body. I got a 727 (4x4) and torque convertor with the engine. I found a low mile 904 from a mid 70's Chrysler that was behind a 318. I understand the 318 is internal balance, 360 external. So, will a 904 with the 727 touque convetor fit behind the 360? This is my first attempt at such a project, so some/any advice would be helpful. Thanks.

I have one behind my 360 in my Dart with a 3500rpm
convertor works just fine bolt up swap.You can not use the 727 convertor you must use a convertor for a 904.

not sure I understood,
you want to use the torque converter from the 727 in the 904? and bolt that up to the 360?
I don't think that works.
pretty sure the torque converters are different between a 727 and a 904, but someone more knowlegable should be along to say.

No way can you use a 727 converter in front of a 904 transmission.

Thanks for the info. I have the 727 and 727 torque convertor. It sounds like the 904 will fit. Sounds like I need a 904 torque convertor. Does the 904 torque converor need to come from a 360, or will one from a 318 fit? Does the internal/external balance just applies to flywheels if you have a manual tranny? Thanks again. Hope to have it on the road soon.

If you run a neutral balance torque convertor, you will need a weighted flexplate.

360 means you need an external balance in back.
904 means a 904 converter.
You can buy a 360/904 converter and get a neutral 904 flexplate.
You can buy a 360 (offset weight) flexplate and any 904 converter.
I don't think the stock 727 flexplate will work with a 904 converter (smaller bolt pattern).

with that

Some 727's use the small flex plate. And most after market performance converters used the small pattern flex plate.

Good stuff. One more question. If I weld in the cross member mount on the frame for the 904, would I need to move it if I decided to install a 727?

727 and 904 use the same crossmember and mount