318 to 360 swap screwed up big please help!!!

I'm sure it is a V-8 K-frame since it didn't require the schumaker mounts for the 318. A test fit of the motor puts the mounting pads at the right distance, I didn't have the truck pan off yet, but it looked like the engine mounts might be slightly forward of the frame pads. Can't be sure till I put on the car pan though. I'm at work right now so I can't measure anything, but I'm pretty sure that the width of the space between the pads is right.
I was kinda thinking about just doing some cutting and welding if it ends up being close.