That would certainly be serious power! And serious bucks!
The fuse is realy big in the center, so there's lots of room for all that kero feeding twins!
Maybe 2 gallons of fuel in custom fitted tanks.

I did a quick check on the nacell dia. at 132" span.
At 6" behind the prop backplate, it about 8" diameter. Does that sound about right for a turbo prop set-up?