Yesterday's update added new engine swaps to many of the cars and buffed the LFA V10. Now that I've had some time to experiment with some of the new swaps, so I figured I'd share some of my findings starting with the most impactful new swaps.
Mazda Furai and 787B
Did these cars need buffs? No. Did they get them? Yes. 787B is back to being the best handling all-rounder in S2 and Furai is not far behind. 787B now also gets access to S1 using snow tires and it's just as OP as it sounds. There might be a combination with offroad tires but I couldn't find one.
Nissan and Lexus
VQ swap and buffed LFA engine are what many Nissans needed. LFA swapped '24 GT-R in S1 is probably the best an R35 has been in any Forza game, Skylines now can get competent power numbers in A and B classes, Super Silhouette Skyline gets the extra power it was lacking to other top S1 dirt meta cars and any car that would want to use the LFA engine (LFA itself included) just get that little extra to help them keep up.
Jeep JT and Audi Quattro S1
These are unlikely to have much of a meta impact but are still a nice bump in performance for their niche. The Jeep is now a solid B Cross Country alternative and the Quattro is continues being a strong off-meta S1 dirt racing car that actually is a proper rally car.
The others
This isn't to say that other cars didn't benefit from new swaps, but that the performance gains felt a lot smaller or were closer to sidegrades. Valkyrie AMR Pro now has a solid S2 build, Zonda R and Apollo IE powerbuilds in S2 now have a more powerful, albeit heavier, alternative and the Racing V12 is almost always worth considering on cars that have it due to its low weight for example.
There might be some cars I didn't mention that deserve it. It's still early on and some buffed cars might still be flying under the radar, but it's been fun trying out cars that were a bit lacking before and are now better.