I've been toying around lately with the idea of modding an FX loop into my TT.

I'm mostly wondering if this is even possible, considering the limited room that a tech would have to work with in there. I just know that it'd be highly desirable, as it would take better advantage of my noise suppressor and some effects, such as delay or reverb, that I'm looking to purchase in the future.

If it is, in fact, possible, how much would I be looking at spending? I paid $375 for my head, and depending on how much it would cost, I might not be able to justify the expense.
Ibanez RGA121 | ESP LTD H-1000
Axe-FX Standard