Tlowe ,
thank you for your honesty.
I am curious to your newer HP & torque numbers, but you dont have to post it if you don't want to.
The 20 PSI of boost on the brakes is just a launching technique.
My Syclone is a stock, very smooth idleing engine & is very steetable.
The cam specs are smaller than your 292 cam, like 175 degrees duration @ .050 & .380 lift? It's stock, as in a stock Chevy Astro Van 4.3 camshaft stock.
In regards to the J&S, I have not mounted mine yet, but plan on making a bracket screw in the knock sensor on the bracket & attach the bracket to the side of the block, or even on the cylinder head. An unused or even a used threaded bolt boss will work.
My Syclones knock sensor is located top of the block close to the distributor.
Are you thinking of getting a J&S?
MBHD