Let's take a visual tour for a second.
This is a 1986 Cadillac Seville/Eldorado engine:
I know, ew. But bear with me here. This is a ground up engine brand new engine that had less horsepower (135 vs 140) and torque (190 vs 200) than than the smaller V6 that dated to 1962 that was standard in the Buick/Oldsmobile equivalent to this car. By all standards it was a terrible engine even before it became clear that they ate head gaskets at a rate a Neon would be proud of. But this wasn't a sporty car, and plenty of people could happily buy Town Cars instead.
This is an Allante. The sportiest Cadillac made to that point, and the one that essentially dictated the brand design (more or less) until the CTS came out. 170 horsepower, 235 ft-lb of torque out of the same engine from above; way more than anything else in the model range had.
This is a later Allante. Even sportier due to a slightly larger engine and a bit more tuning, plus some stuff like adaptive dampers. 200 horsepower, 270 lb-ft. See the dogbone on the right?
This is the last Allante. 295/290. Most powerful FWD car put into production at that point. See the dogbones on both sides?
This is the last year of Chuck Jordan's beautiful greyhound Seville. Even 300/295. Big ass dogbones, among other underhood bracing.
Look at this sad car with none of that whatsoever and with the horrible tamed intake noise, even though this was GM's last desperation shot after the E39 blew them (and everyone else) into the weeds as they rushed to get the Sigma platform finished. This was the result when I investigated a clunking sound in the front when I changed gear:
WHY DOES GM HATE MOTOR MOUNTS SO MUCH!? They did the same thing on the Aurora, Deville and I'm pretty sure the Bonneville GXP before fixing it for the DTS. The engine still has all of the holes to accept the exact same brackets from the greyhound Seville, too; yet GM decided that they... magically wouldn't tear the mounts apart?
Problem solved. Will never have to replace one again.
Even better, the entire front has tightened up considerably, and now when you rev it past 4 grand, it transmits about 1 million percent more engine noise directly into the firewall (but has no difference at cruising speed). It's like I also installed one of those stupid BMW exhaust speaker systems!