This is my most treasured model it is the Tamiya team lotus 72d it has Emerson Fititipaldi no 1 1/12 scale took me nearly 20 years to track one down due to the price and rarity and its the type of kit that my father and I built but never got to paint it to a quality standard the paints I used are mainly AK extreme metalics and alclad 2 and the decals are import from Italy I do have pics of the the build its an incredible kit to do very fiddly

4 attached images. Click to enlarge.

I like car kits, and have a couple awaiting me, mostly 1/24 kits ranging from a Fujimi 427 AC Cobra, Nissan 240ZX works, a Mazda RX3 Savanna to a slammed Datsun Pick-up. I also have a 1/12 motorcycle kit or two (Ducatti 1199; Konica Minolta Honda RC211V & Mick Hailwood Ducati) in there as well, plus a 1/12 Nissan (Datsun) 240ZX from Tamiya.
But, as such I have never built a F1 racing car. The closest I got to a racing car is the Cole Trickle "Days of Thunder" stock car, a Nissan Skyline GR32 racing car, oh yes and a Lancia Stratos rally car.

Maybe one day I'll buy one, who knows?

I’m a bit late to the party, but I would love to see a kit of the amazing home-built motorcycle that took on Ducati and beat them. The Britten V1000. I believe there was a white metal kit of this but all remaining stock was destroyed (by fire or earthquake). A 1:12 kit would be amazing.

If you can find it, and you’re a bike fan, have a watch of “One Man’s Dream”. John Britten was an amazing man, and died way too soon.

As for cars, 1/24 would be fine:

BAC Mono

McLaren F1 road car (the Fujimi one is not very good)

Lotus Elise S1

Great news, my friend @chinesegeorge!