Motor mounts and carb issue

[kev577]

Hey, first time jeep owner here looking for some answers. I got a jeep that was in decent condition, some small rust holes in the floor and window. i had a cracked header and had it repaired but noticed the motor sits in at an angle, looks like one motor mount/tower is bigger than the other. That causes the passenger side exhaust to hit under the floor when i trail ride. And i have a leak in the front of my intake gasket so i have to idel the 4 barrel carb up to make it stay running. That along with the exhaust leak and holes in floor makes driving the jeep toxic
So is it normal for the mounts to be differnet sizes on a AMC 304 or are those mounts from a V6? Any cheap fixes for the intake or do i have to take it all apart and get a new gasket. Looks like the guy before me chased the same problem. Thanks in advance guys!