Yes it is worth it, no it isn't HARD persay. But I never installed one the process seems easy. Depends on if its the whole mount or just insert, you need a vice if you're just doing a massive upgrade. Correct me if I'm wrong but you just have to lift the engine/trans high enough to undo it get it out and put new part or unit in.
166WHP/147TQ Running Rich at flat 12! More power to come once finished!