How close to a stock drivetrain are we talking?
I am quite fond of Honda offerings, but their previous hybrids have missed the mark a bit and the new ones are for heavy cars.
I would like an L15B or R18A1 with titanium intake valves, a small centrifugal supercharger, and something like GM e-Assist (not particularly difficult to retrofit) with lithium ion batteries.
It would be tremendous fun at 8000rpm with a manual transmission, and extremely fuel efficient
