Found at hinckley that jap med's work or pink med's on the front
but on a smaller track 44 & 46 on the front with a diff in the back with pink med's

Also its not all about straight line speed
I got 4th Q on the small track and got 3rd in the final with the slowest car out there in a straight line
I only done well was because i was soo quick in the corner's and smooth with it