I like this, upgraded engine which might be a positive or negative. I think because of the low value of the car it's a positive.
https://www.ebay.co.uk/itm/1983-Toy...716051?hash=item2d24ab0513:g:kk0AAOSwhLNgJqH0
https://www.ebay.co.uk/itm/1983-Toy...716051?hash=item2d24ab0513:g:kk0AAOSwhLNgJqH0