Upgrade manual disc to power disc , but no room

that ECI unit looks promising...

Well, after corresponding with the factory multiple times and still waiting for a final answer the http://ecihotrodbrakes.com/universal_brake_assist.html unit is 16" long and with the measurements the unit will stick out as far as #3 plug and be somewhat close to the valve cover. Looks like it will do if one wants to put up with the monstrosity sticking half way out the drivers side of the motor.

STILL LOOKING AND LISTENING