The P.50-I had the tandem configuration, the P.50-II had a conventional engine configuration, perhaps there was some interference. And yes it had potential, the P.108 was based on it somewhat, I can't remember how much off the top of my head though.
Heres some info I gathered from various sites(I dunno how accurate it is as every site I found had a little variation in the specs):
This bomber was the basis for the P.108. It was a mid-wing design with four engines, in a two-by-two tandem arrangment in the P.50-I and a more conventional leading-edge arrangment in the P.50-II.
P.50-I:
Year of Construction: 1937/38
First Flight: November 16th 1937, piloted byt Angelo Tondi
Crew: 4-5
Wingspan: 25.76
Length: 19,80
Wing Area: 100,00
Engines: 4 729hp Isotta-Fraschini Asso XI RC
Range: 3350km
Max. weight: 20000 kg
Empty Weight: 13000 kg
Loaded weight; 7000 kg
Max. Speed: 435 km/h at 4600 m
P.50-II:
Year of Construction: 1938
Crew: 4-5
Wingspan: 25.76m
Length: 19,80
Engines: 4 1000hp Piaggio P.XI RC40
Max. weight: 20200 kg
Loaded weights: 7000 kg
Function: Bomber
Max. Speed: 450 km/h at 4500 mt
Range: 3,500 km
Check the albums too, I added a few pics of the P.50-I and II last night.