Frame Connector Question?

All, help is needed!
While I'm working underneath my car, new brake, fuel lines, etc., I'm looking at buying MP frame rail connectors. (Trying to copy Garys72Duster's thread.) My problem is my driver's side crossmember ('75 Scamp) is not flat where it looks like the front connector bolts in. I'm thinking of making a small (1 or 1 1/2" T cut) and making this area flat where it bolts on? Would this work or should I bag this idea? I need advice, as I have not bought the connectors yet. Driver side Brake line.jpg Drivers sideCrossmember(1)_LI.jpg Drivers sideCrossmember(3).jpg Here are some pics.
Thanks in advance,
Woody