You should really consider a hydraulic lock setup like Mico or even a the cheap ones. All they do is block the brake pressure from returning back to the master cylinder until you release the valve. It's simple, compact and just plain works.

 

Ya I looked to see what kind of room I had on the cage last night and I just don't see it happening for a traditional lever. I think the Mico is going to be the only route to go. It will be the cleanest looking, easiest to install and will work as an anti theft device when I hide the switch (and I have a great idea how to do it).

 

Odd legal-ese they have on their site and instructions. They read like the device will do the job, but they describe it as "supplemental" to the emergency brake and warn not to lock the line with too much pressure in it.

If you go with the Mico, you may want to keep your chocks in the boot for really steep hills, etc.

 

The warning on the Mico about applying too much pressure initially is because you have to apply more pressure to release it...
Or break the lines loose to release the pressure. You'll learn real quick how much is enough. I used to put my truck in neutral and let it roll and apply the brake lock to see how much it needed. Of course you'd need more pressure parked on a hill.

 

And pray that you never have a banjo bolt or crimp connection start leaking...

Is the only problem the pedal/handle, or are you also trying to figure out how to apply the brakes? You may want to reach out to the manufacturer of the rear calipers, and see if they have an option for you. I've seen kits where they offer an option for e-brake connections on rear calipers. Again, this should be a mechanical means to stop the car from rolling, and not hydraulic.

 

http://www.estopp.com/#!faq/cxqr
There are several other brands available and possibly cheaper but considering the obvious damage if the car rolls away they aren't that expensive.

 

There are some OEM style parking brake actuators on E-bay that are reasonably priced. Could be a cheap alternative if you can find wiring diagrams for them.

http://www.ebay.com/itm/2013-CADILLA...xUiJzK&vxp=mtr

 

Well good thing I don't have any banjos! The only crimp connection will be the braided lines going to the calipers. But that doesn't mean my other fitting won't come loose! Bad outcome there if on a hill.

Yes the only problem is with the handle. Hooking it up to the caliper is simple. It is the same design as a stock Miata just on Wilwoods.

I also agree that this isn't the safest route to go. It is more for anti theft then being a true parking brake. I rarely will park on a hill and when I do, put it in gear and turn the wheels toward the curb. That way if the brake fails, the curb won't.

 

Not a bad idea either haha

 

What about placing the hand brake lever from the Miata somewhere else, instead of between the seats? Can't remember what it was, but I've driven a car with the ebrake handle between the driver's seat and the door...

Overhead?

Doesn't seem like the ebrake hardware would take up much room. How about building a new mounting system that ties into the cage?

Typed this into Google image search, and got all sorts of ideas, just not sure your limitations.

'custom emergency brake kits'

 

Well I just ordered the brakes. They will not have an e-brake cable attachment like originally planned. It was an extra $200 and for less then that, I can go the Mico route (or similar) with no cables. There is literally no room in the car for a handle, so this is my only option. Next time, I will start with a car with a bit more room inside...