The scalloping isn't too hard, you just need a 1/4" round file.
You'd have to get the
DiMarzio Evolution neck and bridge pickup, and try to find the jem single coil on ebay or something.
If it's a
basswood body, it'll sound like an older jem model, like the 77s and 777s.
If the neck is too beefy, you could attempt to just sand it down a bit and possible make it flat a bit on the back (for that Jem neck feel), if it's a Wizard II neck...don't worry about it...no need to get picky
About the monkey grip... you can find how to do this, and all of the above, plus lion's claw at Brian's site
http://www.universaljems.com under Tutorial.