@ArnRno: I meant which part of the transverse engine is too big. If it's too tall, there's nothing I can do about it, while too long would be sacrificing wheel width. Too wide, however, is the easiest to solve by lenghtening the front of the frame or moving the firewall back.
I've thought about the new Mini as well. Would be interesting to try and make generic, but it's a car with enough different variations that it would add a lot to the game. 3 door hatch and convertible, coupé amd roadster, and then a longer wheelbase model for the latest 5 door Clubman but also the earlier wagon design. Of course a small pickup could also be added...
It's a project I might take on at some point, since the new Mini was my favourite car when it came out, and also all these variations.
@Madrias: I forgot to mention it in the other post, but yeah, I thought of that too. Something that can take a V16 with ease. We don't have any land barge coupes from the period. I figure something looking a little like this:

Of course as a fastback coupe and much bigger, but also a convertible with a more practical windshield. Basically the look of cartoon giant coupe/convertibles from the late 40s/early 50s. No idea when (or if) I'll get to that, but it's something I have in mind.