If I'm honest, I have no idea. Best bet is to take a good look through all the parts & see what you can get to raise BHP & lower Kg. as much as possible in your financial limit
Had a go, added a bit of a rear splitter instead of just 'zorsts. Dont know if the quality is any better?
Got bored so started doing a wide body and some other stuff, only done the front and redid the diffuser and exhaust. Will have to wait till i get some cash...