Unlocked it yesterday & jumped into modifying it.
When you select the 4spd trans it drops the class to an A752 (or something like that). There appears to be a issue where it sets all the gear ratios to max & shows a top speed of 7.2mph. This drops the “Speed” rating to 1.9, lowering the cars overall rating.
Setting the gear ratios does not change the performance rating & with all the best parts the car only achieves an A770 rating. This with a 0-60 of 2.0sec, 0-100 of 3.7sec with a top speed of 243MPH.
You can use this car in any PVE race in the A800 class.