Customer service 02 42571230
This is a handy set of three starter bolts most commonly used on GM engines, each is shanked correctly and normal 3/8" AF threaded.
Sizes.. one of each of the following:
3/8" x 16 x 1-7/8"
3/8" x 16 x 3-5/8"
3/8" x 16 x 4-5/8"
Note.. Some V8 Starters may also need shims.. check alignment of your flexplate as these have instances of snaping heads if not properly aligned. The manufacturers don't say this as its left to the fitter to know. .but just how many shims and thickness will depend on the accuracy of the fitter & there experience.