Anybody ever made a uh....shlong bed? Fleet side between a short and long bed.

[Custom/Ten]

Just wondering if anyone has made a fleet side longbed a little shorter? Short beds aren't my taste and long beds are a little too long. I believe the normàl cut down method is 8 under cab and 12 off rear. I'm thinking maybe 4 under cab and 6 off rear. Center the wheels. Anybody ever done it? Custom drive shafts are pretty cheap. Any reason this wouldn't work? Feel feel to tell me if I'm missing something obvious here! A pic would be awesome.