I set up the FXO to match the performance and handling of the Toyota Corolla (similar weight) and Toyota Sienna (not really similar, but closest car in LFS I guess...).

They both have the same power, gear ratios, and weight to power ratios as real life.

Quote from gigapouch :

closest car in LFS I guess...

No,it's not... In case you ment that it's the closest car to FXO...

At least the power and weight are similar. And why did you post a picture of an Opel Astra??

Quote from gigapouch :

...And why did you post a picture of an Opel Astra??

Because it is clearly based on this kind of design ! Astra, Vectra ... you can find a bit of Civic for the front too

For the FXR, you have this car that has probably inspired highly its design too :
http://www.carfolio.com/specifications/models/car/?car=88044

For the engine, flat4 turbocharged looks like taken to subaru ...