Toyota did reliability testing of the B58 and asked for redesigns of parts that failed the Toyota reliability standards. Apparently, this was also the case for the boxer engine in the 86 as well.
So the final design is entirely BMW, but Toyota had a hand throughout development.
The M2C has the F80 M3 engine, but detuned; don't need the M2CS for that.
If maintenance costs are a concern, I'd recommend the Emira. You could hypothetically get it for less than an M2CS or GT4 (assuming you found a dealer who honors MSRP) and have the 3.5L V6 serviced by a Toyota dealer...
There's more things that factor in with how manufacturers measure vs how most side by side comparisons work.
https://www.roadandtrack.com/car-culture/buying-maintenance/a30905608/how-0-to-60-tests-work/ if you want to read a bit.
I've followed those cars quite a lot, and if you're committed to getting an out-and-out sports car, forget any hold ups around a car being full Euro. Just go M2 Comp or GT4. (or maybe Emira) for best value. M2 Comp if you still want to wrench on the car a bit, or the GT4 if you want the best...
^^This^^. Toyota did their part in upping reliability for the engine, which has already been around for 6 years and seems to be fairly reliable even without Toyota input.
https://f30.bimmerpost.com/forums/showthread.php?t=1566946 captures the insights of a lot of high mileage B58s -- other...
I figured as much, and most people here wouldn't be doing all that themselves, so labor will easily drive that to 5 figures; I hadn't factored that in at all.
Parts you'd probably swap: LSD, all 4 tires, at least a front brake kit, coilovers, wheels(?) -- if you insist on forged wheels, especially JDM brands, that's at least $3.5k alone.
WIthout wheels, maybe, but it seems like a stretch.
This is assuming you're buying new parts, not used.
Hagerty did a drag race. They did it on a track with turns (Willow Springs). So technically yes and yes.
I think you were going for hot laps or something of the sort, which they did not do.
Solo developing the engine would've caused a sales disaster like the new NSX; there is no inline 6 option in Toyota's current lineup.
I've also heard of some Toyotas that have the 3.5L V6, especially with turbos, have had cooling problems (idk, maybe this had some hand in it? pure speculation)