I agree, I'm not sure I would crop the left/right. We aren't building DivX here, most DVDs contain up to about 8 black lines on each side.

Since 96 lines are cropped top/bottom at the start of the script, I would suggest:

Spline36Resize(720,384).Crop(0,14,0,-10).Addborders(0,90,0,90)

THIS IS A GUESS. I do not currently have the discs ripped to inspect the actually video for the second cropping (which is a weird decision... Why isn't the cropping done once... or before the resizing for that matter?)

Btw, Spline36 provides better and sharper upscale quality than Spine16 without adding ringing and without any apparent speed impact.

There is also Spline64, but I've heard arguments that it isn't as good as 36.

(cough)Edit: (cough) to addborders...