Where to get hard body 1:32 LMP1 car bodies

Hello every one,

I have got the bug of wanting to try scratch building (well sort of....using a slot.it Hrs2 chassis as a start)

I repainted some generic Scalextric 2014 f1 cars and used patto's Decals to create a remixed F1 legends digital slotcar racing set (6 cars). Now I'm looking to a new challenge

I am wondering how to source hard bodies...(because I don't know how detailed petg or lexan would look)

I Really want to do scale cars with as much detail as I can achieve..
With light kits interior with the intention to race them (similar level to scalextric high details cars)

I love lmp cars an and I would like to do a 6 car set of lmp cars

I would like to model the following cars
Porsche 917k (like everyone else)
Porsche 919 (2015 Webber lemans car) (very high priority)
Peugeot 905 (evolution 1) (very high priority)

How can you get hard body shells or make them (perhaps how to rebuild and augment existing ones)

Thanks in advance for the pointers