Driver Side TTI not wanting to fit...

Hey guys, we got the passenger side header in and on with no problems. but the driver side gave us a little more trouble, Is it common for the header to hit our oil pan? Do we need a special Milodon Street and Strip Oil Pan to make them work? And does the torsion bar go in between or through the header? We got the motor jacked up but it seemed like our oil pan was in the way...

Thanks