which may cause fitment issues with this product and may require modification

If you use the later year range Sportster gas tank mounting hardware this gas tank bolts right in place without issue

Colony Machine #6942-5 1/4-20 UNC Chrome Plated Acorn Nuts - 5 Pack

and none of the ones currently available are really that good

one is are required to mount the Super E Carburetor

#7111-2 Upper Spring Retainers - 1936-1948 Harley-Davidson Big Twin Spiringer 1932-52 45's 1953-54 Servicar - Chrome Plated Brand_OLD-STF Cycle which may cause fitment issuesChrome Upper Spring Retainers for Harley Davidson Springers 1932 52 '45's 53 54 Servicar 36 48 Big Twin Springers. Made in Ohio, USA.