WOW!!!! i love Touring Bimmers, so I'll keep my eye on this for sure.
As for the ///M kit, be careful, Revell/Dragon/Hasegawa's molds (///M3, Coupe, Compact, 320i) are a bit narrower than Tamiya/Revell's 325i, I know this as I've got a revell's 325i with ///M kit, and I noticed this.
Keep on working and good luck!!!
Cheers, James.