800 kg kit car.
600 lb v8 up front but behind front axle so weight around 50/50 200 kg on each corner, will have rear spoiler aswell which should give some downforce.
at 130 mph for straight line stability what else should i be looking at or should it be ok ?

 

How easy would it be to get the floor flat and a diffuser under the back end?

 

diffuser woud be troublesome as its all back axle its huge lol.

i could ali panel the floor though with just 2 holes for sump pan and gearbox belly.

the body sits alot lower at the front than the rear aswell which i guess will help to get the air out quick from under it.

 

At only 130mph and in a straight line, I really cant see you having a problem.

 

Just tracking I would say....

 

thats good to hear maybe im being over cautious then i genuinely dont know at what mph it becomes an issue, i dont have the private facilitys to get above about 80 mph inless i can get on an old dissused runway.

il get it 4 wheel aligned aswell as ive just done it with a tape measure and wood lol

 

that defo needs doing ive guessed it by eye lol