FX Loop in a Major

I've overhauled my major a few months along with the one cable mod. I've been using more and more this amp lately, but I really miss a FX Loop.

I'd like to know if it's possible to install a loop, and how hard could it be. I've seen some FX Loop boards but I have no Idea at all about that.

Could you guys give me some ideas?

 

Use the metro loop kit.
It's just about the best one out there and pretty easy to install.

 

I was really thinking about this kit. It seens to be very straightforward and I can put it in a external project box so I won't be drilling any holes to "my precious"

 

A nice loop in any good musical amplifier is a plus.

 

One wire mod usually means inclusion of a ppimv.
Ppimv and loop usually don't work too well together.
Not a long ago, this very issue was up, ending with forum member New religion rebuilding an amp for someone... not saying it won't work for you, just a bit of heads up...
J