CROSS said: 
update, with custom pickguard. It fits pretty well on the lower horn, it just needs a bit more filing.
Wow. That's how the jag-stang should've looked !!! Straight humbucker, contours and jag trem is must.
I filed my js pickguard also... Maybe you should consider doing the area where pickguard meets control plate for a more consistant line. Maybe you are, I dont know. I took quite a bit off the control plate but not too much incase I wanted to go back to original then it would look awful. So here's what I did...

The pickguard is quite far inside the body didn't have a choice inn the matter.
That's going to be a great guitar !!!