No, it's not that simple. You need the manual pedal assembly, manual ECU, clutch cable, etc.

When converting to manual, there is really two options.
1) Sell the car and buy a manual. This is the cheapest and easiest.
2) Buy a complete manual trans parts car and swap everything.

I understand the emotional attachment thing, but after I totaled my first car ('92 Integra) I bought and started driving a manual trans '87 Civic Si. The Si was definately a funner car... I haven't regualrly driven an automatic since.