Can't imagine accessing #s 2 & 4 if it had a plate.
Why do you think having a front motor plate would make getting to those spark plugs worse
I've used both stock BB A body motor mounts with several different brands of headers and stock A body exhaust manifolds and I've had BB A body race and street cars with front motor plate and getting to the plugs, especially on the passenger side with either is not easy or really hard to me
![confused confused](/ubbthreads/images/graemlins/custom/confused.gif)
The front motor plate allows you to set up the crankshaft height and center line to your preferences
![up up](/ubbthreads/images/graemlins/custom/thumbs_up.gif)
Not so with stock type mounts or adapter mounts
I was spoiled on the first three BB A body cars that I had and raced, they all had Hooker fender well headers on them, changing plugs was a breeze