Not so much work till now but heres the wip
Box'n'sprues :
The kit, as the 510 it's a rebox of the old heller kits, good quality for the period , raised details out of the control surfaces , few pieces that nees some little detail cure.
Starting from wings and cockpit inner struts
Almost cut off horizontal rudders and glued toward ground
not bad the seat but i prefere more accuracy, then removed side walls and put sonme detail in the bottom and wrapped a plastic sheet into the seat
cutting refine and putty
To the wings :
Added central fuel tank and the four sections in the wings with thinner plastic sheet i have (or not
), some detail to add again at next round 
The propeller with replaced 20 mm gun (yes, 20 mm!!!) with a brass tube
First arrangement of wall instruments, after i see the wheel and the trhottle was too much forward..
the following week (this..) builded the floor with rudder pedals and cut the IP basement.. here i see some of wall instruments was too much forward :(
The start of control stik, from a stretched sprue
and ready
The excess of sprue at the basement helped the sctratch session giving a good grip
cut the excess and in place , glued from the bottom
the other side corrected in some way
I forget about! i filled the inner wings basement in the fuselage with plastic pieces to have a correct inner fuselage !
The two IP finished and the seat with the belts hole done
That's all till now.. for this kit
Don't think I've ever seen an interior scratched in that scale! 
