47-55.1 Raising Cab and Cab Mounts

[Driver_WT]

I have 1953 Chevy truck on an S10 frame, continuing to make progress to get her on the road this summer. I have raised the cab about two inches to make the hood fit correctly (core support is as low as it can go). I have two hockey pucks in as higher cab mounts just for the trial fitment. Is it acceptable to have 2 to 2.5 inches of rubber in the cab mounts or should I raise the height of the steel cab mount brackets on the frame? Also, what are some alternatives for the cab mount rubber if I need a higher height than what the 1/2" thick rubber cab mount will give me. I hear that using hockey pucks as the rubber portion of the cab mount is not acceptable and may be illegal in Canada.

Thanks for the help.

Wade