Hmh, I figured it'd be to wide, guess not though.

The RT kinda complicates things to say the least. Were it not for the RT, then I'd just remove what I had to from the grip, fill the area for the RT with JB weld and seat a nut in there, and attach the ak grip like normal. Seeing as the airsoft grips are pretty dang hollow and weak, I'd prolly opt for a real steal grip, though I believe that might need a some routing out to fit over what's left of the 98's grip.

If were you though I'd prolly go with the second option. Having the RT just makes attaching the grip like normal too complicated.