Etype - k, got it down to 1.58.008, same setup as yesterday (or close anyways) - i think ive got at least another .5 sec perhaps more to come, but really wanted to make 55!
in case anyone wants to try here are a few combos ive tried
(i) Full Race inc WR, yokos, full width, rear wing only, race engine parts (no turbo) except street ign
(ii) as (i) but without rear wing, boost speed stat to 5.5
(iii) engine swap, then combo of engine parts to get to 399, the all race parts except sport WR - comes out with around 400torque, and about 150lb heavier than (i) - oh and you can only get it to 840 PI and run out of options

for me (i) and (iii) are similar but i found (i) more stable to drive
i can run (ii) BUT i find you have to be so careful on the throttle on corner exit, and careful on the high speed corners - so overall was actually slower... but if you run in (ii) for a few laps, it makes me alot faster in (i)

probably a couple of things to bare in mind,
1) im not that good

someone who races alot of muscle probably will have alot better throttle control
2) i run without any assists, and with the wheel - im sure if i turned on TCS, and possibly STM - then that would make running without a wing feasible.
those are my excuses, and im sticking to them !
btw, are we running 399 or 400? ALS said you had to get into 400HP comp, but that is under 400 according to the text, and i can never get in with 400.