Ibishu Miramar 690/710 Coupe and Convertible 2.0

Changes:

• Match some node parameters found in the current sedan body, this fixed a randomly found instability that would make the G-force meter go crazy
  
• Updated soundConfig of the I6 engines for the game's audio setting after v0.21
  
• Updated the 710 and 690 bodies to have an 8,000 RPM gauge and a 240 km/h speedometer
  
• Added z690 Unibody, a sedan body but with the mod's gauges
  
• Added 195/60R13 Thin Whitewall Fron/Rear Tires, for 13x7 Ibishu 5RS Steel Front/Rear Wheels
  
• Added Grille Custom, for 710s
  
• Added Front Air Dam Custom, for 710 and vanilla
  
• Added Left/Right Custom Headlights, for 710s and vanilla, rotate-able through Tuning
  
• Added 1.9L DOHC I6 Engine with dedicated parts, smaller in size and power relative to the 2.0L one
  
• Adjusted 5-Speed Manual Transmission 690's gear ratios and shifting RPM for arcade mode gearbox behavior
  
• Adjusted I6 engine beam connections with the body, seems less wiggly now
  
• Adjusted I6 engine node weight, was very top heavy
• Adjusted I6 engine powerband and potential power, was too powerful

Turbo:

• Added turbo parts for the 1.9L DOHC I6 Engine
  
• Removed the turbo parts for DOHC I4 Engines, the way the header loads in the vanilla DOHC engines make it irreplaceable
  
• Added 1.9L DOHC I4 Engine Turbo instead

Configurations:

• Updated configurations and infos, 690s now use the new 1.9L DOHC I6 Engine
  
• Updated 710 configs to use the 13x7 Ibishu 5RS Steel Wheels and new tires
  
• Updated 690 Sedan (M) to use the new sedan body
  
• Added Track 690 (M) configuration