It's about Headers

I have Hedmans 1 5/8 tube, no oil filter adapter, full size filter and no clearnce issues.
Mini starter (also no issues)
Spool mounts but they do go under the steering on the drivers side.

You don't have to beat anything with them and the ones I have are aluminized coated.
Been on there about 9 monthes now and still look like new.