7-series conversion to manual and engine swap?

I want to get a 7-series bmw because I love the body line and overall look of the car. However no 7 series that I know of come with a manual transmission. I know that a 735i was made at one point and some came with a manual transmission but they are hard to find. So it got me thinking if anyone knows if it is possible to convert a 1995-2001 e38 740i to a 725i with a manual transmission using a donor 325i because I want a straight six with a manual transmission and the look of a 7-series. I would put work into the 2.5L engine before doing the swap so I am not concerned about power. If anyone could help let me know. Thanks