Hey Lemon if ya want 4 doors and handling then the fd1 + k20/24 frank is doable, with a full tank of juice and lightweight seat in my fd1 it weighs under 1190kgs, confirmed at the drags last week.

Handling would be on par if not better than your dc2 dc5 Ep3 euro options. Conversion cost is a smidge higher due to needing an fd2 subframe, i was lucky enough to get an fd2R subframe and steering rack cheaply. Anythings doable if ya have the time and cash.