I got to my starter gear by prying it out with a small screwdriver and measured the cap between the gear and flywheel. My bell housing cover and clutch was removed to make it easy access. The new flywheel required shims where the old flywheel did not. Here is a post and some pictures I took while installing the flywheel and measuring the gap. https://www.firebird400ho.com/new-flywheel-and-clutch/
