No instrument cluster / speedo.. Still okay to drive?

I am working on AiM Dash logger for my build,

Build Thread :
https://www.northamericanmotoring.co...e-pacific.html









Last week, I removed instrument cluster behind the steering wheel, as well as the center speedo.

Car fires up well, revs well(tested low rpm only, cuz the car is stored in the showroom during the winter).

If(I hope) the car can be driven on track without those clusters, I would remove them.

Anyone tried this? I still need my blinkers/hazards work. (Too bad I havn't tried the blinkers when I fired my car up last week)

Any possible trouble/issue?

Since some car would go to limp mode if there is no rpm / speedo signal...