96 civic with b18b ls swap VIBRATION PROBLEMS

i did a 94 b18b ls swap into my 96 civic ex

we had to custom fabricate a 92-95 civic driver side mount to fit on my car... because the stock 96 mount was to weak it kept on breaking

the custom mount works good...

but my car vibrates WAY TO MUCH>.... feels like the entire frame is vibrating...

anyone dealt with this before.... can someone help me figure out how to make it stop vibrating sso much....

any help will help

i was thinking of buying the stock 96 mount again but i'm affriad it will bust and also the stock 96 post mount bracket doesnt line up

and i think the 99-00 si is the same mount.... so that post mount bracket wont line up either.... the holes


any ideas someone please help me out