On the GTP account, I first did a bit of housekeeping, verifying the PP of the cars in the dealers and in the garage against what I previously put down (there were a couple changes), and checking the widths of the widebody cars as almost all of those changed. The funny thing is, the PP of the widebody cars didn't change.
I then looked at the new engine swaps found so far, saw the 1973 BMW 3.0 CSL is currently in the UCD, saw I had a bunch of Z4 engines, and fitted 4 of the engines to newly-bought 3.0 CSLs, widening the body on 2 of them. I then hit up Luca for a GReddy Fugu Z as I had all the Fairladys, and further drained the bank account buying up the three Vipers to get a 6-star parts Wheel of Despair, which gave me yet another Stroke Up S for the DeLorean (3 total, at least 1 more than needed). After handing me my Wheel of Despair, Luca ran away.
I activated the Neoclassical Challenge menu book before reading
@TRB1999's post above. I also saw that the competition brought some Gr.2 and detuned Gr.1 firepower, and my collection of 1980s/1990s Gr.3 and above cars is a bit thin because all of them are only in Hagerty's. As I use that account to keep track of any PP changes in Hagerty's/UCD cars, I didn't want to alter a car I only have one of. The only serious possiblility that I had more than one of was the 962 C, and not only is that a straight-line sled not well-suited for Willow Springs, the second one I own was tuned up to 950 PP. Fortunately, the Supra GT500 just got back into the dealer (for an inflated 1.8 million Cr.), Praiano has a fresh
800 PP tune for it (for Watkins Glen), and I still had 3.1 million Cr. I bit the bullet, bought a second Supra GT500, applied my standard blackout livery, and brought it up to snuff.
At Willow Springs, I had to do a 1-stop strategy, using FM2 and some fuel saving. On the usual normal difficulty, I finished a disappointing 3rd at Willow Springs, behind the R92CP and the Sauber C9. I then did what I should have done - detune the 962 C to cruise to win. The base tune I used at Willow Springs is essentially Exeter's 915 PP tune, with the power turned down enough to get it under 800 PP. (75% ECU/75% power restrictor), RH tires, and the transmission turned down a bit (a very unoptimized 3.721 final, with 5th an indicated 310 km/h). On a no-stop no-stress FM1 strategy, I won by 30 seconds, in 11:52., so it should be doable on hard.
The high-downforce setup wasn't suited for Red Bull Ring, so I decided to try Praiano's 800 PP tune there, running FM3 for a no-stop strategy. That turned into a wet laugher as I came down for full wet tires on lap 3 (the top 7 didn't come down for intermediates until lap 4, and nobody thought to put on full wets), and won by 40 seconds in 17:08.
Fuji was no match for the Praiano tune, though I had to turn down the fuel map a bit further for a no-stop run (I settled on FM5, which was probably a bit too conservative). 16:52 later, I had a 53-second win. On consideration, I could have easily used Praiano's tune at Willow Springs. At that point, I decided to grab my Wheels of Despair - the 4-star cashless marathon gave a worse-than-worthless Bugatti invite, while the cashless 5-star from the menu book gave some titanium connecting rods/pistons for the 2011 Renault Megane R.S. Trophy.
For the Hypercar menu book, I took a slightly-detuned Ferrari FXX K (detuned to 800 PP by Exeter) out of storage and stomped the competition. I got another Hellcat engine out of the deal.
I might hit the Plus account later.