SBE 318 basic rebuild +CAM , INTAKE, HEADS, expectations?

Almost felt like a personal attack.. my 318 has P295/65-15s :)
Do they fit with stock rear suspension? 8-1/4 rear end?
On a 8" steel wheel?

Further
my headers are a PITA to take off the driver side routes under the steering and there is no way the big old starter could be removed, I assume it's a older long tube design.
They are in bad shape and I think I have to replace them

So what SB header does clear a 74 duster with power steering ..
Long or shorty headers?
No guess work