70 C-30 Hooker 2452 install problem

[willyT]

I read a lot of post on headers, decided on the ceramic coated hooker 2452's
Everybody liked how they fit, but of course I've got the oddball.

Thought I'd install them today but driver side header does not clear the crossmember.
Front header bolt lines up but rear of header 1/4" to 1/2" to high because it's resting on the crossmember.
Anybody else run into this, are there taller motor mounts available.

Any help would be appreciated.

Thanks
WT