A few updates on my build.
I received these beautiful exhaust elbows from stainlessBros, they are 90 degree elbows with 4" to 3" reducers. These will lead to some Eisenmann Race mufflers that are from the F10 M5. I bought them on Ebay and the year of vehicle was not stated, so if they do not sound as beautiful as the E60 or E63 version I'll replace them with the correct year.
I am getting my pedal situation in order as well. I removed the Tilton pedal set for cleaning in the ultrasonic bath and I will be installing RCR pedal sliders and welding ears onto the back of the pedals for direct mounting of the brake and clutch MC. I want my wife to be able to drive the car, so I'm making the pedals and seat adjustable. It will not be difficult to hard mount these items for race duty if/when needed.
The RCR engine mount has been modified and the engine has been test fitted. Unfortunately all of my CNC parts from RCR were not finished before they were closed for quarantine, so I can't finish modifiying the rear engine mounts until I have the trans adapter and custom flywheel in hand.
In positive news I bought a pair of Tesla electronic Parking Brake units for $99 on Ebay and they fit over the stock rotors! I've also assembled my own motor controller for about $100. The system uses a
Pololu VNH5019 Dual Motor Controller with an Arduino Uno microcontroller. I've made custom software that lets you control them with a simple on/off switch and customize the clamping force. I will make the arduino code available for anyone to use if there is interest. I still need to fabricate mounts, 3d print an enclosure and wire it all up, but I'm glad to know that the core electronics are working.
I set the windshield onto the spider for the first time and saw for myself how terrible the fit is. I'm going to rely on a great windshield installer to cover up this particular sin, since there are no easy options to fix it without distorting the spider and creating other body gap challenges.
I also received the gorgeous Superlite Billet shifter, but I need to take some pictures that do it justice!