Tough to tell from the angle of the pics. But here's what I would have tried.
First.. never take out the trans dipstick. It's not in the way. Bolt the rear up tight. Then put the crossover in. Looking at it from teh front, it sits just left of the dipstick and should also be left of the MC/booster. With your pic angle its tough to tell if you couldn't have rotated (or pulled a reinserted) the crossover to be closer to the motor.
Seems odd that one would be so far off, out of the many that have been done here.
A great drop in header. SLP. I love SLP's for their super easy, no hassle installs.
