sb chevy fitting aftermarket frame ?

[RBR]

I have been mocking up my 350 in a aftermarket frame and have been having a hell of a time with fitment.( I think thats word).
1. Stock oil pan hits rack/pinion
2. Harmonic balancer 6 3/4in. sits on top of rack/pinion, barely clears

So, I've spent a ton of time tring to add spacers to motor, shim the rack out a little and have got things to clear. It just seems that things should be fitting a little better?

My question is, are the mounting points on a frame symetrical, I mean is the L/R both the same. Does a SB 350 have the same mounting point on both sides of the motor? It looks the same to me, using crude measurements.

My frame looks like the passenger side mounting points/holes are about 1/4 inch lowwer.

It seem's to me that if the passenger side was a little higher then I would benefit by raising the motor and obtaining more clearance.