Top may need a fixed position, don't think it looks right with the windows up and roofless.
Needs a lowering in front, too.
Making it an even blacker blob, not too sure – but that's a Rocky thing, not a Jalpa thing.

Rear wheels are oddly narrow, considering the Count wore the huge 345s back than, but I am afraid this is correct.

The Jalpa was always an obscure footnote of Lambo history, perhaps other rims with less plastic hubcap optics would have made it visually tougher.

You may notice I am not a fan of the Jalpa nor the model by KK.
But I am happy you found a missing car and I am sure you will convert it into something nice.