The Worn Out 787B

So here's a bit of back story for you. 

I picked up this car back in 2010 when I was really getting into GT4 after discovering how to drive the right way. It's my first LMP1 car, and an awesome one at that. It's rotary engine won many races and got a ton of miles. At the time it only had a stage 3 turbo and some NOS to help with some of the Special Conditions events. Since I've gotten it, it's ran just about every Endurance race the game has, including 24 Hours of Nurburgring no less then 4 times. It's won me over 10,000,000 in credits, and got me into the extreme events hall were I got some of my bucket-list cars. It currently has nearly 18,000 miles on the odometer, and remember, I bought this thing new with 0 miles. 

And after all that, it's utterly worn out. Suspension is saggy, unable to keep a straight line when going 180 MPH, doesn't steer right, and it's gone soft. The engine has lost a considerable amount of power, it needs an oil change after every other race just to maintain the power, and it's going to be retired. Im not going to sell it off because I still enjoy driving it in the game, but it really cant race any more. It's tired and done. 

Right now Im saving up a replacement for it, or well, preparing to earn the replacement. Namely that one Mercedes, you all know which one Im talking about. I have the car, and I have an idea as to how to go about it, and I hope to get it.