...but i wonder if you could simply drill new holes on dropforward, if you just don't wanna order that peice.
Or you could drill and tap your holes in your trigger frame so that you can accept standard inline dropforwards and not have to go through the hassle of having to drill more holes in future drops that you purchase.
That's how I got the CiP flame drop to work on mine. When I upgrade to a larger tank (and a larger drop for that tank), I won't have to retap holes in my drop (and lots of inline drops don't have the room to accomodate offset hole patterns). In fact, I don't know of any inline drop that will accomodate offset holes patterns (except the universal drops, of course).