V had a deeper cooler with a circular opening at the front. Revell made the lip intake of semi-circular shape instead of the round one. The deeper profile and round intake of the Mk V oil cooler can be seen on this photograph. Interestingly, this very cooler belongs to a preserved Spit in RAF Hendon museum, which is on display as Battle of Britain Mk. Martin Waligorski Tailplane Fin shape doesn't match the characteristic elliptical shape of early Spitfires.
Elevators are also wrong outline, look a bit like swept-back.
Perhaps only my impression, but the comparison to the drawings showed that rear fuselage is too high in cross-section. I don't consider it as being a really big problem, but the colors on the decal sheet are weird. I recommend you to use some aftermarket decals, at least for the squadron letters and fuselage band. On a bright side, the decals feature some stencils. Roundels on my sample were slightly off-register, but perhaps I was just unlucky with my kit.