That's about what I paid for mine from Couer D'Alene Subaru. Took a while to get it in the mail but was quite a savings over the local guys. Took me about an hour to put it in without the benefit of a hoist. As for engine mounts I don't recall hearing of anyone ever replacing one. In all the years I've owned Subarus I've never done one. But have replaced trans and rear diff mount on several.

The cooler I installed on mine was a B&M cooler ordered online from Jeg's. About $50. Mine is for a GVW of 24,000 Lbs. I mounted it on the engine cooling fan bracket behind the radiator. You might be able to get by with the next size down and mount it out front of the the AC condenser. I chose mine because a buddy has one that's slightly larger in his 750 HP dragster running a modified Turbohydramatic 400 trans. If it can keep that monster cool......