Need Help With Hooker Trouble

[willyT]

Need suggestions
Can't get drivers side Hooker 2452's to clear
The first try Header hit crossmember so rear of header flange was to high.

I replaced motor mounts which helped but also had to added about 3/4" spacer under tranny mount to clear crossmember. (1st Photo is before I added spacer)

I can now get all the bolts in, but header is hitting the frame rail so the top of the header flange is angled out further than the bottom.
I think I can grind the frame rail some to get clearance.
But from reading posts on headers the Hooker 2452's should have fit better than this.

Also will raising the tranny 3/4" cause any problems since angle of drive shaft changed.

Pleased let me know if you have any thought on getting these to fit.
Or should I send them back to Summit and try something else.

Thanks
WT