The starter fits with no problems and there was about 3/4" of rotational adjustment that could be done with the solenoid before contacting the block or header. Remember, this is for the 143 tooth flywheel and large bellhousing so things will be different with other combinations. It was a pain, but you mount the starter, put the headers on with a couple nuts to snug it against the cylinder head, find the optium location for the solenoid, cinch down one of the longitudnal bolts and then remove the starter. That was a trick getting that bolt snug with the starter and headers installed.
I marked the location with a sharpie just in case it moved during removal. After removal, cinch down and locktite the two longitudnal bolts and then hook up the battery cable on the solenoid. The small connector of factory positive battery cable had to be drilled out slightly to fit the post on the RobbMc starter. The connector then had to be bent 90 degrees to clear a header tube that was directly in front of the starter posts
. Fit was tight (1/8" air gap) between the cable and header tube at the solenoid. Now, with the battery cable tightened down on the starter, install both from below. Snake the battery cable between the header tubes and juggle the header and starter to get both in place. Tighten down the starter bolts, header nuts, and install the engine mount bolts. We're over the hill on this job now (I hope)